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Multiply just like the numbers were both whole numbers.
To add decimals, line up the decimal points so that place-value positions match.
To subtract decimals, line up the decimal points so that place-value positions match.
When subtracting two decimals, remember to add zeros so each place has a digit.
Start by calculating the sum of 13.6 and 23.05.
59.5
69.28
35.38
0.34
134.12
37.431
We want to simplify the given expression. 13.6+23.05+0.781 Let's start by adding 13.6 and 23.05. We line up the decimal points so that place-value positions match and add zeros as necessary so that each place has a digit.