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Decimals<br />
For example: Estimate the sum of 0.988 + 0.53<br />
1. Round each number. 1 + 0.5<br />
2. Add the rounded numbers. 1.5<br />
3. The actual sum is: 1.518<br />
Subtracting Decimals<br />
Decimals are subtracted the same way whole numbers are subtracted. You just<br />
have to make sure the decimal points are lined up.<br />
For example: Subtract 7.2 − 3.7<br />
1. Write the question so the decimal points are<br />
lined up.<br />
2. Subtract the tenths.<br />
3. Subtract the whole numbers.<br />
4. Line up the decimal points.<br />
Remember: To subtract put the larger number on top and you can add as many<br />
zeros after the decimal point as you need.<br />
For example: Subtract 15.2 −0.184<br />
Follow the above steps, but add zeros to<br />
give the top number the same number of<br />
places as the bottom number.<br />
57<br />
<strong>Simply</strong> <strong>Math</strong> Workbook
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