Decimals Place Value and Rounding

Decimals: Place Values, Rounding Up/Down

by: teach quiz

​What is a Place Value?

​can be used in comparing decimals. First, align the decimal points. Then, compare the digits in the same place value one by one, starting from the left going to the right.

​ADDITION AND SUBTRACTION OF DECIMALS

​Instructions for adding decimals:

​1. Align the decimal points and the digits with the same place values.

​2. Add the same way we add whole numbers starting from the rightmost digit going to the left. Regroup if possible.

​3. The decimal point in the sum shoulds.d be aligned with the decimal points of the adden

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​In Subtracting Decimals, we follow the steps below:

1. Align the decimal numbers in a column.

2. ​Word Problems

3. ​Align the decimal point in the difference.

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​To round off decimals, follow the same procedure as in rounding whole numbers. Consider the digit to the right of the digit to be rounded. If it is less than 5, we round down. If it is five or higher, we round up.