## Error message

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• Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; ctools_context_required has a deprecated constructor in require_once() (line 127 of /home/tusa/public_html/sites/all/modules/ctools/ctools.module).
• Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; ctools_context_optional has a deprecated constructor in require_once() (line 127 of /home/tusa/public_html/sites/all/modules/ctools/ctools.module).
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# Rounding and Estimating Sums and Differences

Worksheet (Pre-Algebra)

## Rounding and Estimating Sums and Differences Worksheet

This Free Pre-Algebra Worksheet contains problems on rounding and estimating sums and differences of decimals. A few problems are specific in asking students to use front-end estimation.

## Lesson:

3. To find sums and differences by rounding and estimating

20

3

Yes

## Samples:

Tutor-USA.com Worksheet
Pre-Algebra
Rounding Decimals – Estimating Sums & Differences

Estimate how much of each square is shaded.

Estimate by Rounding.

3) 6.48 + 3.242
4) 5.92 + 2.451
5) 2.437 + 6.833
6) 3.72 – 1.61
7) 3.7 – 2.742
8) 0.747 – 0.546
9) 6.25 + 3.48 + 6.40
10) 23.76 + 62.753 + 32.06 + 16.524

Use front-end estimation to estimate each sum or difference.

15) 2.56 + 0.75 + 4.49

19) 3.854 + 1.209 + 0.1689 + 1.923

20) 2.769 + 0.56 + 0.615 + 2.646