Review for Eureka Math Module #2

Express the missing divisor using a power of 10.

42 ÷ ___________ = 0.042

• 10,000

• 1,000

• 100

• 10

5,350 ÷ 10 = 5.35

• True
• False

Estimate the quotient by rounding the expression to relate to a one-digit fact.

562 ÷ 73  ___________

• First, turn 73 into 70. Then change 562 into 560 because 7 X 8 is 56. The estimate is about 8.

• First, turn 73 into 70. Then change 562 into 560 because 7 X 8 is 56. The estimate is about 80.

• First, turn 73 into 80. Then change 562 into 560 because 7 X 8 is 56. The estimate is about 70.

• This can't be done in the normal universe.

When asked to estimate 1,475 ÷ 688, it makes the most sense to change 688 into ___.

If we were asked to estimate 1,475 ÷ 688 , we'd first turn the 688 into 700 to make it simpler.

Then we would change 1,475 into _____. (Note: Be sure to place a comma in your answer or the computer will mark it wrong.)

Put these steps in order for using the "RDW" strategy for problem solving.

• Read the whole problem a couple of times and circle or highlight all the numbers.

• Underline the actual question they are asking you to answer.

• Draw a picture, such as a tape diagram, to show how the numbers in the problem are related to each other.

• Complete any calculations to solve for missing amounts.

• Write your answer in a way that directly addresses the question you were asked.

Sarah says that 19 ÷ 9 equals 9 ÷ 4 because both are “2 R1.” Which of these shows her mistake using decimal division?

• 
• 
• 

A rectangular playground has an area of 3,162 square meters. If the width of the rectangle is 51 meters, find the length.

• The area is 62 meters.

• The width is 62 meters.

• The length is 62 meters.

• None of these is correct.

A baker uses 4.5 pounds of flour daily.

a. How many ounces of flour will he use each day? (1 lb = 16 oz)

A baker uses 4.5 pounds of flour daily.

a. How many ounces of flour will he use in two weeks? (1 week = 7 days)