Answer for Form 1 Chapter 1: Whole Number (Exercise 1)

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==Answers==
1. Which of the following numbers has a digit value of 8000?
Answer: 278641
Hundred thousands	Ten thousands	Thousands	Hundreds	Tens	Units / Ones
2 	7 	8 	6 	4 	1
In the questions, it says "The digit value is 8000", so the place value of 8 must be thousands.
The place value of 8 is thousands, and the digit value is 8000. So, the answer "278641" is correct.
WHY THE OTHER ANSWERS WERE WRONG?
Because their digit value of "8" is NOT 8000.
2. Which number when rounded off to the nearest thousand becomes 348 000?
Answer: 347605
When rounding off to the nearest thousand	
Before rounding off 	After rounding off
347605 	348000
So the answer "347605" is correct.
WHY THE OTHER ANSWERS WERE WRONG?
Because after rounded off to the nearest thousands, they were NOT equal to 348000.
3. The number 367 395 is written as 400 000 after rounding off to the nearest_____________.
Answer: Hundred thousands
When rounding off to nearest Hundreds 	
Before rounding off 	After rounding off
367395 	367400
When rounding off to the nearest Thousands 	
Before rounding off 	After rounding off
367395 	367000
When rounding off to the nearest Ten thousands 	
Before rounding off 	After rounding off
367395 	370000
When rounding off to the nearest Hundred thousands	
Before rounding off 	After rounding off
367395 	400000
So, the Hundred thousands is correct. And the other answers were wrong.
4. 896 ÷ 4(9+5)=
Answer: 16
5. 189 + 126 ÷ 9 x 2 =
Answer: 217
6. The number that is to be added to 1 691 to get 3 000 is
Answer: 1309
7. The number 587 530 is written as 588 000 when rounded off to
Answer: the nearest thousand
8. Which of the following numbers when rounded off to the nearest ten thousand become 2 640 000?
Answer: 2 635 123
9. In the number 641 728, the difference between the value of digit 6 and the value of digit 1 is
Answer: 599 000
10. The place value of digit 8 in number 728 105 is
Answer: thousands
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