Grade 4 HMH Go Math - Answer Keys Answer keys

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Grade 4 HMH Go Math - Answer Keys

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Question 18 (request help)
On average, a refrigerator door is opened 38 times each day. Len has two refrigerators in his house. Based on this average, about how many times in a 3-week period are the refrigerator doors opened?

about

times

Question 19 (request help)
The cost to run a refrigerator is about $57 each year. About how much will it have cost to run by the time it is 15 years old?

about $

Question 20 (request help)
If Mel opens his refrigerator door 36 times every day, about how many times will it be opened in April? Will the exact answer be more than or less than the estimate? Explain.
Type below:

Question 21 (request help)
Represent a Problem What question could you write for this answer? The estimated product of two numbers, that are not multiples of ten, is 2,800.
Type below:

Question 22 (request help)
Which is a reasonable estimate for the product? Write the estimate. An estimate may be used more than once.