Estimate Sums and Differences

Estimate Sums and Differences

Assessment

Flashcard

Mathematics

3rd Grade

Practice Problem

Hard

CCSS
3.NBT.A.1, 4.NBT.A.3

Standards-aligned

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is estimation in mathematics?

Back

Estimation is the process of finding an approximate value that is close enough to the correct answer, often used when exact calculations are not necessary.

2.

FLASHCARD QUESTION

Front

How do you round a number to the nearest hundred?

Back

To round a number to the nearest hundred, look at the tens digit. If it is 5 or greater, round up; if it is 4 or less, round down.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

3.

FLASHCARD QUESTION

Front

Estimate the sum of 327 and 431 by rounding to the nearest hundred.

Back

700

4.

FLASHCARD QUESTION

Front

What is the estimated sum of 56 and 79?

Back

140

5.

FLASHCARD QUESTION

Front

How do you estimate the total number of items ordered?

Back

To estimate the total, round each quantity to the nearest ten or hundred and then add the rounded numbers.

6.

FLASHCARD QUESTION

Front

Tracy ordered 325 pet toys and 165 bags of dog food. What is the best estimate of the total number of items?

Back

500

7.

FLASHCARD QUESTION

Front

How do you find the difference between two numbers using estimation?

Back

To estimate the difference, round each number to the nearest ten or hundred and then subtract the rounded numbers.

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