What is compatible numbers in estimation?
enVision Math, 5th Grade Topic 5 Practice Test

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Mathematics
•
5th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Compatible numbers are numbers that are easy to compute with mentally. They are often rounded to make calculations simpler.
2.
FLASHCARD QUESTION
Front
How do you estimate division using compatible numbers?
Back
To estimate division, round the numbers to the nearest compatible numbers that are easy to divide.
3.
FLASHCARD QUESTION
Front
What is the formula to find the number of boxes ordered if you have the total items and items per box?
Back
Total items ÷ Items per box = Number of boxes.
4.
FLASHCARD QUESTION
Front
How do you calculate the total number of windows in a building?
Back
Total windows = Number of floors × Windows per floor.
5.
FLASHCARD QUESTION
Front
What is the formula to find out how long it will take to wash all the windows?
Back
Total windows ÷ Windows washed per day = Total days to wash all windows.
6.
FLASHCARD QUESTION
Front
How do you find the number of items per group and the remainder when dividing?
Back
Divide the total items by the number of groups to find items per group, and use the remainder to find leftover items.
7.
FLASHCARD QUESTION
Front
What information is needed to calculate total consumption over time?
Back
You need the rate of consumption and the time period.
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