Estimating Sums and Differences
Flashcard
•
Mathematics
•
3rd Grade
•
Practice Problem
•
Hard
Standards-aligned
Wayground Content
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
What is estimating sums?
Back
Estimating sums means finding a close value to the actual sum of two or more numbers without calculating the exact total.
2.
FLASHCARD QUESTION
Front
What is estimating differences?
Back
Estimating differences means finding a close value to the actual difference between two numbers without calculating the exact result.
3.
FLASHCARD QUESTION
Front
How do you round a number to the nearest ten?
Back
Look at the digit in the ones place. If it's 5 or more, round up. If it's 4 or less, round down.
Tags
CCSS.3.NBT.A.1
CCSS.4.NBT.A.3
4.
FLASHCARD QUESTION
Front
How do you round a number to the nearest hundred?
Back
Look at the digit in the tens place. If it's 5 or more, round up. If it's 4 or less, round down.
Tags
CCSS.3.NBT.A.1
CCSS.4.NBT.A.3
5.
FLASHCARD QUESTION
Front
What is the estimated sum of 32 and 16?
Back
The estimated sum is 50 minutes.
6.
FLASHCARD QUESTION
Front
If you have $50 and spend $17 on a shirt and $29 on pants, do you have enough money?
Back
Yes, you have enough money.
Tags
CCSS.3.OA.D.8
7.
FLASHCARD QUESTION
Front
What is the estimated sum of 123 and 456 when rounded to the nearest hundred?
Back
The estimated sum is 600.
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