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Add and subtract decimals
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Learn it Line up the decimal points and fill empty places with zeros. Then add or subtract as with whole numbers and bring the point straight down.
Example: $15.3 - 7.865$
- Write 15.3 as 15.300.
- $15.300 - 7.865$, regrouping as needed.
- Answer: 7.435. Check: $7.435 + 7.865 = 15.3$ ✓.
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