DECIMALS: ESTIMATION, ADDITION, AND SUBTRACTION
Rounding decimals helps give a quick estimate for an answer. Sometimes that’s all that is needed to give an idea of how much of a quantity is needed. Rounding can be used to find a reasonable solution to a problem.
When adding and subtracting decimals, we line up the decimal points to keep the place values in line. We’ll first practice adding and subtracting decimals using decimal fractions to help us understand the meaning of decimal computation and then we’ll practice adding and subtracting decimals.
Rounding Decimals
Finding a Reasonable Solution
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 Estimating Decimals |
The Britannica login and password may be required for some of the activities.
Login: vla Password: student |
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Adding and Subtracting Decimals Using Decimal Fractions
Add and Subtract Decimals
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| Add and Subtract Decimal Numbers |
| Decimal Numbers |
| Decimals and Fractions |
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