Estimate Sums & Differences
Flashcard
•
Mathematics
•
3rd - 4th Grade
•
Practice Problem
•
Hard
+1
Standards-aligned
Wayground Content
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16 questions
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1.
FLASHCARD QUESTION
Front
What is estimation in math?
Back
Estimation is a way to find a number that is close to the exact amount, 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 or hundred, then add the rounded numbers.
3.
FLASHCARD QUESTION
Front
How do you estimate a difference?
Back
To estimate a difference, round each number to the nearest ten or hundred, then subtract the smaller rounded number from the larger one.
4.
FLASHCARD QUESTION
Front
Estimate the sum: 46 + 37
Back
80 (round 46 to 50 and 37 to 40, then add 50 + 40 = 90).
5.
FLASHCARD QUESTION
Front
Estimate the difference: 85 - 29
Back
60 (round 85 to 90 and 29 to 30, then subtract 90 - 30 = 60).
6.
FLASHCARD QUESTION
Front
What is the nearest ten to 758?
Back
760.
Tags
CCSS.3.NBT.A.1
CCSS.4.NBT.A.3
7.
FLASHCARD QUESTION
Front
What is the nearest hundred to 793?
Back
800.
Tags
CCSS.3.NBT.A.1
CCSS.4.NBT.A.3
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