  # Round Numbers to the Nearest Ten

In this worksheet, students round numbers to the nearest 10 before multiplying to find an estimated answer. Key stage:  KS 2

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Use Rounding for Answers/Accuracy

Difficulty level:   #### Worksheet Overview

In this worksheet, round numbers to the nearest ten to estimate the answer to multiplication problems.

Example

Question:

Estimate the answer by rounding the numbers to the nearest 10 before multiplying.

*Remember to round down if the ones are 1, 2, 3 or 4. If the ones are 5, 6, 7, 8 or 9 round up!

78 x 43 A
x
 B
=
 C

78 x 43 80
x
 40
=
 3200

Remember, to work out 80 x 40, we work out 8 x 4 x 10 x 10 = 32 x 100 = 3200.

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