Everyday Math Skills Workbooks series - Simply Math - My ERC
Everyday Math Skills Workbooks series - Simply Math - My ERC
Everyday Math Skills Workbooks series - Simply Math - My ERC
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Simply</strong> <strong>Math</strong> Booklet<br />
The Basic <strong>Skills</strong><br />
For example: Estimate 235 + 585<br />
1. Round each number. 200 + 600<br />
2. Add. 800<br />
3. Actual answer: 820<br />
How to Improve the Estimate.<br />
1. Round each term that will be added.<br />
2. Add the rounded numbers.<br />
3. If both are rounded down or both rounded up see if the amount of<br />
rounding is more than 50. If it is, add or subtract 100 to the estimate.<br />
4. If one number is rounded down and the other is rounded up a closer<br />
estimate will not be produced by this method.<br />
For example: Estimate 445 + 735<br />
1. Round each term. 400 + 700<br />
2. Add. 1100<br />
3. Rounded down by more than 50 so add 100. 1100 + 100<br />
4. Rounded answer: 1200<br />
5. Actual answer: 1180<br />
NWT Literacy Council<br />
11 11<br />
<strong>Simply</strong> <strong>Math</strong> Workbook
Change language