Estimating Sums and Differences
Flashcard
•
Mathematics
•
3rd Grade
•
Practice Problem
•
Hard
+1
Standards-aligned
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is estimating in math?
Back
Estimating is finding a number that is close enough to the right answer, often used to make calculations easier.
2.
FLASHCARD QUESTION
Front
How do you estimate a sum?
Back
To estimate a sum, round each number to the nearest ten and then add those rounded numbers.
Tags
CCSS.1.OA.C.6
CCSS.2.OA.B.2
3.
FLASHCARD QUESTION
Front
How do you estimate a difference?
Back
To estimate a difference, round each number to the nearest ten and then subtract the smaller rounded number from the larger one.
4.
FLASHCARD QUESTION
Front
Estimate the sum: 45 + 36 to the nearest 10.
Back
80
5.
FLASHCARD QUESTION
Front
Estimate the difference: 92 - 47 to the nearest 10.
Back
50
6.
FLASHCARD QUESTION
Front
What is the nearest ten of 89?
Back
90
Tags
CCSS.3.NBT.A.1
CCSS.4.NBT.A.3
7.
FLASHCARD QUESTION
Front
What is the nearest ten of 31?
Back
30
Tags
CCSS.3.NBT.A.1
CCSS.4.NBT.A.3
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