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Decimals<br />
Estimating the Difference of Two Decimals<br />
How do you estimate a difference by rounding<br />
1. Round each decimal term that will be subtracted.<br />
2. Subtract the rounded terms.<br />
For example: Estimate the difference of 0.988 − 0.53<br />
1. Round. 1 − 0.5<br />
2. Subtract the rounded numbers. 0.5<br />
3. The actual difference is: 0.458<br />
Multiplying Decimals<br />
To multiply decimals, multiply the same way you would multiply whole<br />
numbers, except you must put the decimal point in. Count the number of<br />
decimal places in both numbers you are multiplying and put the total number of<br />
places in your answer.<br />
For example: Multiply 4.8 x 0.9<br />
1. Arrange in columns and multiply.<br />
2. Place the decimal point in the answer so that the number of places in the<br />
answer is the same as the two numbers that were multiplied.<br />
58 58<br />
<strong>Simply</strong> <strong>Math</strong> Workbook<br />
NWT Literacy Council
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