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Adding and Subtracting Decimals. NS 1.0 Solve problems involving addition and subtraction of decimals. . To add decimals. Line up the decimal points and add the columns from right to left. Place a decimal point in the answer directly below the other decimal points. Example 1. 0.64 + 0.39

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Adding and subtracting decimals l.jpg

Adding and Subtracting Decimals

NS 1.0 Solve problems involving addition and subtraction of decimals.


To add decimals l.jpg
To add decimals

  • Line up the decimal points and add the columns from right to left.

  • Place a decimal point in the answer directly below the other decimal points.


Example 1 l.jpg
Example 1

0.64 + 0.39

Line up the decimal points.

0.64

+ 0.39

__________________________

Add the columns.

0.64

+ 0.39

__________________________

1.03


Example 2 l.jpg
Example 2

5.74 + 3.3

Line up the decimal points.

5.74

+ 3.3

_____________________________

Add the columns.

5.74

+ 3.3

_____________________________

9.04


To subtract decimals l.jpg
To subtract decimals

  • Line up the decimal points.

  • Subtract the columns from right to left, regrouping if necessary.

  • Place a decimal point in the answer directly below the other decimal points.


Example 16 l.jpg
Example 1

0.86 – 0.49

Line up the decimal points

0.86

- 0.49

__________________________

Regroup the tenths. Subtract the columns.

0.86

- 0.49

__________________________

16

7

0.37



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