standard_description: Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when the two decimals refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual model.
Grade 4 expectations in this domain are limited to fractions with denominators 2, 3, 4, 5, 6, 8, 10, 12, and 100.
problem_activity: Problem 1
Act 1: Look at the following image -
[IMG]
Then watch the video
Piggy Bank
.
a.   What do you notice? What do you wonder?
b.   Is there enough money to purchase the paint set? Make an estimate for how much money is in the piggy bank.
Problem 2
Act 2: Use the following information to determine whether there is enough money in the piggy bank to buy the paint set –
There are 70 nickels in the piggy bank.
There are 64 quarters in the piggy bank.
There are 105 dimes in the piggy bank.
There are 230 pennies in the piggy bank.
Problem 3
Act 3: See the solution below –
[IMG]
Was your answer reasonable? Why or why not?
Problem 4
Act 4 (the sequel): If she buys the paint set, how much money will she have left over?


aligns: no