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english_AAAI_Math

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982d68ff78fb4d07914cf20c9a917bb2

1

short_answer

There are $$235$$ pupils in Room $$A$$ and $$567$$ pupils in Room $$B$$. A teacher transferred some pupils from Room $$B$$ to Room $$A$$ such that both rooms had the same number of pupils in the end. How many pupils were there in each room after the transfer?

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1

short_answer

Caiculate： $$818-271-18+64-29+36$$．

27bdd20547f24d8985bedec355b3bcb2

1

short_answer

Multiply $$193$$ by $$72$$.

b0db81c8fe684031982ca97bbbbe4f6c

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short_answer

After Ryan spent $$$89.65$$ on a badminton racket, he had $$$20.35$$ left. How much money did he have at first?

bfc856ed693948c5bc8692af12953e1d

2

short_answer

There are $$12$$ points on a circle such that the distances between adjacent pairs of points are all equal. How many right angled triangles can be formed by joining any $$3$$ of the points?

fe9555e52b6940b58bc0240731da3d6c

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short_answer

A sequence of numbers is formed by always adding the same number to get the next number in the sequence. The $10^{th}$~number in the sequence is $23$ and the $15^{th}$~number is $38$. What is the $12^{th}$~number?

e25bc60d63ca444999ac89d8eb2ef5f4

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short_answer

Calculate: $$\frac{1}{1\times 2}+\frac{2}{2\times 4}+\frac{3}{4\times 7}+\frac{4}{7\times 11}+\frac{5}{11\times 16}+\frac{6}{16\times 22}+\frac{7}{22\times 29}+\frac{1}{29}$$.

1b578ba89dc64a0497a494ff8c376cf1

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short_answer

At the school scavenger hunt, class $A$, $B$, $C$ each has $24$, $36$, $42$ students who want to particpate. The participating students will need to split into groups of the same size. They can\textquotesingle t group up with students from other classes. How many students will each group have?

caef56015c2546c787649e8de4983b71

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short_answer

Calculate: $$200+199-198-197+196+195-194-193+192+191-190-189+\cdots \cdots +4+3-2-1=$$．

f920596541b54c59bae5257c1fa6effd

1

short_answer

There are $$200$$ children in a school. They pay for their school lunch which costs $$ $4.36$$ each day. How much did they pay in total for their school lunch over a period of $$5$$ days?

513db53d54374f00afb65d6d0f973de3

1

short_answer

There are $20$ questions in a science competition. A person gets $5$ points for a correct answer and loses $3$ points otherwise (getting a wrong answer or skipping a question). Justin answers all the questions and gets $76$ points. How many questions does Justin answer correctly?

c502fd8bef51420684df77fd33225144

0

short_answer

Work out the following: $\dfrac{3}{8}$~of~$16\text{kg}$~.

fc6d0ef4b64c44a4900d03d68cbc4621

2

short_answer

A product is marked at $$20 \%$$ above the cost price. It is then sold at $$90 \%$$ of the selling price. The profit is $$ $120$$. What is the cost price of this product?

e45242e744df43f9909a012add8cd759

1

short_answer

There are $$128$$ sheep on a farm. $$\frac{5}{8}$$ of them are black, $$\frac{1}{4}$$ of them are white and the rest are brown. How many of the sheep are brown?

8e0574e136cb4a76abf5378d8154a43a

0

short_answer

A special meal costs £$$27.60$$ per person. How much will a group of $$38$$ people have to pay?

e9e3eafe8b3e48d3b2a71156f1fe9aae

1

short_answer

There are $$25$$ table tennis balls in $$5$$ boxes of the same type. There are the same number of table tennis balls in each box. How many table tennis balls are there in $$6$$ boxes of the same type?

b84b9d049f3944a6a3fec6f34b08dcdd

1

short_answer

Solve the absolute value equation: $\textbar x+1\textbar=2x+5$

1f71711a37ba41f19b391be626ee7d84

1

short_answer

Put four different colored socks in a row at home. How many different ways are there to arrange them? Put two different colored pairs of socks in a row. How many ways are there now? Think about why you get two different numbers.

63250d13de624f798109236462057294

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short_answer

What number is half way between $13.8$ and $18.6$?

3d56a142b7734cae80fcd6db270a1a50

1

short_answer

If $$\overline{ab}+ \overline{ba}+b= \overline{aab}$$, find $$a+b$$.

cc66abc29793482fb9eb2797063a599e

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short_answer

$7\times4\times37=$~\uline{~~~~~~~~~~}~

2a26499da5b34ec8944d958d53314106

1

short_answer

$9\times59=$~\uline{~~~~~~~~~~}~

273702e9fdfb4478a973714e3892e8a8

1

short_answer

Four people meet to discuss a new swimming competition. Each person shakes everyone else's hand exactly once. How many handshakes are there in total?

336b55c1b98a494a8fcdec5a76129b58

2

short_answer

There are ten points on the circumference of a circle. How many triangles can be formed by using any three points as their vertices?

a3e7cbd795a9409dbf490a20013698fc

2

short_answer

Andre and Beth both had a total of 24 sweets. After their teacher gave them 4 sweets each, Andre now has 6 sweets more than Beth. How many sweets does Beth have now?

b6b88edeb93e4d9cb9b8b1211d07bf53

2

short_answer

Work out $$246\times507$$ Answer:~\uline{~~~~~~~~~~}~

ebaac819520a41bea5853ed02b80e219

1

short_answer

How many terms are there in the sequence below? $$4$$, $$7$$, $$10$$, $$13$$$$\cdots \cdots $$$$121$$.

b9605682663c4e549e208dbbe926ff31

1

short_answer

Anthea and Ben are playing a game. Here are the rules: 1. There are $18$ apples placed on the table. 2. They each take turns removing apples. In each turn, the player must remove $1$, $2$, or $3$ apples. 3. The player who removes the last apple wins the game. If Anthea goes first, how many apples should she take in the first turn so that she can make sure she will win the game?

de94f3e9046049bda163af8199fad009

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short_answer

The total mass of $$3$$ tables is the same as the total mass of $$4$$ chairs, The mass of a table is $$2\text{kg}$$ heavier than a chair. Find the mass of a table.

fa9cbee13c99485d8303b1f5e6225e5c

0

short_answer

（UK Emanuel School Entrance Examination Year $7$ Entry Question \#$18$） In the British Army there are~$4500$~men who are taller than~$180\text{cms}$. Of these~$750$~are taller than~$190\text{cms}$. How many men are these who are between~$180$~and~$190\text{cms}$~tall?

27eb9e5bd22f43eba7fb2e1a0973e1ba

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short_answer

Judy and her five friends stand in a line to perform on stage. Given Judy wants to stand on either end of the line, in how many different ways can they perform?

015af54f56854424960c5b919f820761

1

short_answer

Andre and Beth both had a total of $24$ sweets. After their teacher gave them $4$ sweets each, Andre now has $6$ sweets more than Beth. How many sweets does Beth have now?

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1

short_answer

If $6$ bars of chocolate cost £$3.18$, how much do $5$ bars cost?

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1

short_answer

What is the sum of the following numbers? $$9 + 12 + 17 + 18 + 21 + 23 =$$

6e7fd510bdaa4c41b99c4531bc548e9a

1

short_answer

In a Formula 1 car race, a Ferrari driver started th e last place. However, throughout the race, the Ferrari driver overtook 5 other cars and finished in second place. How many cars were there in the race?

c1faa5b5faaf44929efa78451a63ff75

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short_answer

I\textquotesingle m thinking of a number. I take away $6$ and then divide the result by $12$. The answer is $2$. What is the number I am thinking of?

ab627271938f40748d9acac110c92172

3

short_answer

Two sisters did maths and English together. The elder sister spent $$10$$ minutes more on maths than the younger sister, while the younger sister spent $$4$$ minutes more on English. It was known that the elder sister spent a total of $$88$$ minutes on her homework, while the younger sister spent $$12$$ minutes less on her maths homework than on her English homework. How many minutes did it take the younger sister to do her English homework?

539a3a5cc52d4011bfeede240f8dd840

0

short_answer

In English, words like EVE, MADAM, KAYAK and LEVEL are called PALINDROMES, ~because they read the same from left to right as they do from right to left. In mathematics, numbers like $$747$$, $$5555$$, $$11911$$, and $$2378732$$ are called PALINDROMIC NUMBERS for the same reason. How many palindromic numbers are there between $$1000$$ and $$9999$$? (PLEASE REMEMBER TO SHOW US YOUR WORKING SO THAT WE CAN SEE HOW YOU ARE GETTING YOUR ANSWER, AND MAYBE BE ABLE TO AWARD YOU SOME PART-MARKS EVEN IF YOUR~~ANSWER IS WRONG). Answer :~\uline{~~~~~~~~~~}~

6dc506c916024720a5dab28d29fdcb33

2

short_answer

The average of four numbers is 130 . If a number of the four numbers is removed, the average of the three numbers will become 110 . The number which is removed is~\uline{~~~~~~~~~~}~.

f8f8aec9479848be90565270cd0b38f4

1

short_answer

The Authority of Roads have decided to use a new system on traffic lights. The traffic lights are arranged such that $3$ traffic lights are supposed to turn green at the same time every $9$ minutes. The first traffic light changes lights every minute, the second traffic light changes lights every $1.5$ minutes. Determine the shortest time the third traffic light has to change by, considering that it to at least be $30$ seconds or longer.

43c61058429c4fe489d7c947a01763c2

2

short_answer

Leo and Mia are playing a game. Here are the rules： 1. There are $$14$$ apples placed in a row. 2. The players take turns removing either $1$ or $2$ apples each turn. 3. Whoever picks the last apple wins the game. Leo starts first and is followed by Mia. To ensure his victory, how many apples must Leo take away in the first turn?

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2

short_answer

Nick\textquotesingle s 12 silver spoons have three quarters the value of Pilpha\textquotesingle s 6 gold rings. How many silver spoons have the same value as 3 gold rings?

9c9e21c3a7444569afbadf1e30e09b81

2

short_answer

Students from Think Primary School are arranged in a square array with equal row spacing and column spacing on a playground. The outermost layer of the array is full of boys, and its adjacent inner layer is full of girls, then boys, then girls, and so on until the innermost layer is reached. If there are $55$ more boys than girls in total, please find the total number of students.

a7eb63b14ee740bca350f5e3f57ea487

1

short_answer

The cost of $$3$$ pencils and $$2$$ markers is $$ $13$$. The cost of $$2$$ pencils and $$3$$ markers is $$ $12$$. What is the total cost of $$7$$ pencils and $$7$$ markers?

dca6b59a57004164891b83c2be747227

1

short_answer

A whiteboard marker cost ＄$$3$$. A paintbrush cost ＄$$1$$. A teacher paid ＄$$28$$ in all for $$12$$ paintbrushes and whiteboard markers. How many whiteboard markers did the teacher buy? Hint: Make an Assumption (Assume either all whiteboard markers or all paintbrushes.)

a29766e9a35b4cf986fe192653492fb5

1

short_answer

The average weight of all the teachers in Star School is $65$. There are $3$ male teachers in Star School with an average weight of $75$. The average age of female teachers is $60$. There are~\uline{~~~~~~~~~~}~female teachers.

0a147c77462a47acad9d599e3c92987b

0

short_answer

Work out $$527-382$$. ~\uline{~~~~~~~~~~}~

cf55459e46844705ab8a79455735ac26

1

short_answer

The school cheerleading teams lined up in a rectangular formation. Cora is standing the $$5^{th}$$from the front, $$7^{th}$$ from the back, $$2^{nd}$$ from the left and $$4^{th}$$from the right. How many students are involve in this rectangular formation?

e357740e701e49a8ac92bfcd275f4557

1

short_answer

The product of $$33\times 55\times m$$ is a square number. Find the smallest possible value of~ $$m$$.

a40fe8c3642a46819ca618c1a9afcf63

1

short_answer

Ashley is dividing $8$ identical pieces of candy into three plates. Each plate has at least $2$ pieces. How many different ways are there for Ashley to divide?

58c3353b6ce0476d96bec02a41fe9aa6

1

short_answer

$40\times700$

f6a6b8973f3d4d1ca73c2a8e344b2022

1

short_answer

Star and four of her teammates are competing in a $$5$$ person relay. If Star must be the first runner, how many ways can the five teammates arrange themselves in the race?

307081f49a1647b9bb92dfaffe694842

2

short_answer

A four-digit integer has its digits increasing from left to right. When we reverse the order of the digits, we obtain a four-digit integer whose digits decrease from left to right. A third four-digit integer uses exactly the same digits, but in a different order. The sum of the three integers is $$26 352$$. What is the value of the smallest of the three integers?

384faa4ecc0e47d79e49dfce00412c19

2

short_answer

The operation $$\otimes$$ acts on two numbers to give the following outcomes: $$2 \otimes 4 = 44$$ $$5 \otimes 7 = 104$$ $$1 \otimes 5 = 28$$ $$7 \otimes 10 = 146$$ What is $$6 \otimes 12$$ equal to?

9e57bb3e87064594be7261beeaf4f749

2

short_answer

It takes $$60$$ minutes to cut a piece of wood into $$31$$ segments. If the cutting speed remains the same, how long does it take to cut it into $$50$$ segments?

8fc55209039645f08e1579f51727eae8

1

short_answer

Dividing a certain number by $$3$$ leaves a remainder of $$1$$; dividing it by $$5$$ leaves a remainder of $$3$$; dividing it by $$7$$ leaves a remainder of $$5$$. Given that the number is between $$100$$ and $$200$$, what is its possible value?

dba8f63335da404e874ce5fc77d842f3

1

short_answer

Work out $$123-41=$$ ANSWER~\uline{~~~~~~~~~~}~

cbeeb3a46e374ddca0fda082575458fb

1

short_answer

A number minus $$30 \%$$ of itself is $$210$$, what is this number?

55fb13e55caf41cc8779e7ea0146667d

1

short_answer

Palindrome years (like $$1991$$ and $$2002$$) read the same forwards and backwards. The years $$1991$$ and $$2002$$ are $$11$$ years apart. How many years apart are $$2002$$ and the first palindrome year after $$2002$$?

ac8cb9cc0d5443de91ca6e628f69e729

2

short_answer

Candy and Nancy have some flowers. At the beginning, Candy had $$11$$ flowers, and Nancy had $$9$$ flowers. After Candy gave some flowers to Nancy, Nancy has $$8$$ more flowers than Candy. How many flowers does Candy have now?

a2bde406a8da4970a219afa0022bd89d

1

short_answer

In how many ways can the letters in the word \textquotesingle ARRANGE\textquotesingle{} be arranged?

b686e2f0e98042d783104bb0e8f6ac9a

1

short_answer

Seesaws cost £$$200$$ each in January $$2010$$. In January $$2011$$ they had gone up by $$45 \%$$. Calculate how much a seesaw cost in January $$2011$$.

98be2cb5dcce45168975297b4f076410

1

short_answer

Mike\textquotesingle s Mum gave him $$60$$p and his Dad gave him $$40$$p on Monday. They gave him the same amount of money on Tuesday and Wednesday. How much money did George have altogether?

3737e4a9ac8f48808137f02833fa17bc

1

short_answer

Find the missing $$3$$ digit number in this calculation: ???$$\div24= 36$$. ~\uline{~~~~~~~~~~}~

4d111600431f40ce98fbddc8a64d1e36

0

short_answer

$$60-8(2x-5)=4$$．$x=$．

3dcee099b86f42178f5a693ab97c5bce

1

short_answer

The temperature at midnight on Friday was~$-5^{°}\text{C}$ and at midday on Saturday was $$17^{°}\text{C}$$. What was the overall temperature change?

1b443edab3c147249e25ac875c4f6ab7

0

short_answer

If you continue the sequence $1$, $2$, $4$, $7$, $11$, $16$, $\cdots \cdots$ write down the smallest number which is greater than $50$.

5c90212721354a48a4e81ec2a43c81bc

1

short_answer

Pens cost $43\rm p$ and booklets cost £$1.85$ How much change will I get from £$10$ if I buy $3$ pens and $4$ booklets?

87e1f465cdbb4df7b961ae79f361a0c3

1

short_answer

Sibel is waiting in line to buy a ticket. There are $$10$$ people in front of her. Counting from the back, she is in the $$14$$\textsuperscript{th}~place. How many people are there in total lining up?

55a229942e9e41f3a62e0880d02b5241

1

short_answer

Work out $10 + (10 \times 10) - (10 \div 10)$

f8c6ec11093d496198cb0de06c6908ee

0

short_answer

Write the population of St Petersburg in figures.

a24bbb90466f45bb817f8a9fa98063a4

2

short_answer

A $$3$$-digit integer is called a \textquotesingle X-number\textquotesingle{} if any two adjacent digits differ by at least $7$. How many $$3$$-digit \textquotesingle X-numbers\textquotesingle~are there?

054c2ee09a60448ebda4bd6602806b2b

2

short_answer

A $$4$$-digit integer is called a \textquotesingle d-number\textquotesingle{} if the thousands digit is divisive by all the other digits. For example, $6231$ is a \textquotesingle d-number\textquotesingle{} because $6$ is divisible by $2$, $3$ and $1$. How many $$4$$-digit numbers larger than $5000$ are \textquotesingle d-numbers\textquotesingle?

16105156e2914d5a8990c9b24f0b9981

1

short_answer

What is the third prime number?

4d1598c9ff7f4502a10cb35d69667abd

1

short_answer

A school gate needs the correct combination of four digits in the correct order. When $$5648$$ is tried, two digits are wrong. When $$3628$$ is tried, two digits are wrong. When $$3147$$ is tried, two digits are wrong. When $$5629$$ is tried, two digits are still wrong. When $$1258$$ is tried, \uline{all} the digits are wrong. What is the correct combination of digits?

a736c91b54064c40a00c4a922d2dc285

1

short_answer

$$(\textasciitilde\textasciitilde\textasciitilde\textasciitilde+7)\div9=9$$

392cb5c0bb804c05baec15996d6881df

1

short_answer

A number of children are stood, evenly spaced, in a circle. If the $4$th child is opposite the $22$nd child, how many children are in the circle?

27de9be9ab0d46f5a9881ef33bd601fa

1

short_answer

Selena likes collecting coins. She collected $$10$$ coins in the first week, $$14$$ in the second week, $$18$$ in the third week, and $$22$$ in the fourth week. According to this pattern, how many coins has she collected during the first ten weeks?

f3b1467c46654ba18779b73ec862809e

1

short_answer

Gina had $4$ times as many dresses as Fiona. Lily had twice as many dresses as Gina. If Lily had $24$ dresses, how many dresses did Gina and Fiona have altogether?

c8f6e26082ce4b84bed3069a498d5034

1

short_answer

Work out~$0.8\times3\times10$.

e3c3e3c1805842db862f14a943f7260b

2

short_answer

The marks scored by students $$A$$, $$B$$, $$C$$, $$D$$ and $$E$$ in a mathematics test are above $$91$$. $$\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde$$The average mark of $$A$$, $$B$$ and $$C$$ is $$95$$. $$\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde$$The average mark of $$B$$, $$C$$ and $$D$$ is $$94$$. $$\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde$$$$E$$\textquotesingle s mark of $$96$$ ranks as the second highest among all. $$\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde$$$$A$$ has the highest mark. $$\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde\textasciitilde$$$$B$$ and $$D$$ have the same score. How many marks does $$D$$ score in the mathematics test?

ad676d9c940642cbac148da8b2a9a501

2

short_answer

Bella deposited $$$35 000$$ in a fixed deposit account which paid her an interest of $$1.5 \%$$ per year. After a few years, the amount of money in the bank became $$$37 100$$. $ $ Bella said that the number of years she saved is $$5$$. $ $ Is she right or wrong? If she is wrong, how many years did she actually save her money in the bank?

52696ab5f8494de9be7eed46df374cc7

1

short_answer

The average weight of all the teachers in Star School is $65$. There are $3$ male teachers in Star School with an average weight of $75$. The average age of female teachers is $60$. How many female teachers are there?

bcb4d3a73bdd461db258bc9c024573c1

2

short_answer

The mass of a jar $\dfrac{1}{4}$~full of Marmite is $$250\text{g}$$. It has a mass of $$350\text{g}$$ when it is $\dfrac{3}{4}$full. What is the mass of the empty jar?

f95f09c885d34503865d05cffe9b4ae0

1

short_answer

Garrett bought $13.15\ell$ of soda and poured all of it into a bucket. He used part of it to fill $\frac{1}{7}$ of an empty bottle that had a capacity of $9.1\ell$. Then, he used some of the remaining soda to fill $4$ cups of $350\text{ml}$ each completely. How much soda did he have left in the bucket in the end? Express your answer in litres.~\uline{~~~~~~~~~~}~$\ell$

5072d7c5f2434099ac2734046be03e0f

2

short_answer

$$6$$ years ago, father\textquotesingle s age is $$5$$ times of his son\textquotesingle s age. If the sum of their age is $$78$$ this year, how old is the father now?

3be5a913fea7494c80e0bfe6a08910b7

2

short_answer

A block of mass m = 2.0 kg is attached to an ideal spring of force constant k = 500 N/m. The amplitude of the resulting oscillations is 8.0 cm. Determine the total energy of the oscillator and the speed of the block when it\textquotesingle s 4.0 cm from equilibrium.

79ed6bec48e84620b031b1f6fe00dc58

2

short_answer

Rose and Kylie are playing a game. Here are the rules： 1. There are $$14$$ marbles placed in a row. 2. The players take turns removing either $1$ or $2$ marbles each turn. 3. Whoever picks the last marble wins the game. Rose starts first and is followed by Kylie. To ensure her victory, how many marbles must Rose take away in the first turn?

375112c34e0a4163ad8adac5448587c5

1

short_answer

If $a$ and $b$ are two square roots of $2023$, find the value of $a+b-ab$.

a4e26b2a8caa4a18ae49cec55472c63f

1

short_answer

Work out $245 − 182$.

c4ccfd8cb6b248a38a4fda147bef55ce

1

short_answer

I have £$45$ in $5$p coins. How many $5$p coins is that?

32ad0f6a736244e3a4c5dda6e2a4ca47

0

short_answer

What is $$-7$$ added to $$-3$$? Answer:~\uline{~~~~~~~~~~}~

7d2942aa92ed44e29a1be000b1aaf0c2

2

short_answer

Pip and Bud are running. They have run $$540$$ metres in $$3$$ minutes altogether. Each minute Pip runs $$20$$ metres more than Bud. How far has Pip run in the 3 minutes?~\uline{~~~~~~~~~~}~

2ec86cfd46db49fb8f7a59bc5ac2195f

2

short_answer

Box $$A$$ contains four times as many coins as Box $$B$$. $$6 \%$$ of the coins in Box $$A$$ are removed and transferred to Box $$C$$. $$20 \%$$ of the coins in Box $$B$$ are removed and tranferred to Box $$C$$. There are now $$1220$$ coins in Box $$C$$ , which is $$22 \%$$ more than the original mumber of coins in Box $$C$$. How many coins were there in box $$A$$ at the beginning?

8d4919986f144ffeae4055000acfbb47

1

short_answer

Sally had some bottled drinks. $$60 \%$$ of the bottled drinks were coffee while the rest were tea. She bought more bottles of tea. In the end, $$40 \%$$ of the bottled drinks were coffee. What was the percentage increase in the number of bottles of tea when more bottles of tea were added to the bottled drinks?

bcb80e6312784336a54c7308af6263cb

1

short_answer

In base $$16$$ number system, digits larger than $$9$$ are represented by letters. $$A$$ (base $$16$$) $$= 10$$, $$B$$ (base $$16$$) $$= 11$$, $$C$$ (base $$16$$) $$= 12$$, and so on. Calculate $$2A3+17B$$ in a hexadecimal (base $$16$$) number system.

d1ec5589c16045a8a24ef55131c530f0

1

short_answer

Solve the following equations for~$x$, showing all of your working. $3\left( 2x+1\right)=75$

94913f61e8cf4fe8822180b9025e8717

2

short_answer

A textbook has $$500$$ pages, numbering from $$1$$ to $$500$$. How many times does the digit $$4$$ show up in numbering these pages?

afedf1aa53604878984ef0e2e15b9e62

1

short_answer

What is $$25 \%$$ of $$30 \%$$ of $$40 \%$$ of $$300$$? Answer~\uline{~~~~~~~~~~}~

f17c963ecb1a4e4ea278edc6215a3efb

1

short_answer

Work out $$152+45-52+16$$. ~\uline{~~~~~~~~~~}~