Adding and Subtracting Decimals

Adding and Subtracting Decimals

by Kendal West

​How to Add and Subtract Decimals

​Step 1 - Line up the numbers and decimal point!

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​Step 2 - Add a zero (placeholder) to the right of any numbers as needed.

​Step 3 - Beginning with the lowest place value, add or subtract from right to left.

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​Step 4 - Bring down the decimal point.

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Step 5 - Check to see if your makes sense!

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Multiple Choice

Do you have to have your decimal points lined up when you add and subtract?

• True

• False

Multiple Choice

What digit represents a placeholder?

• .

• 0

• 1

• 2

Multiple Choice

2.3 + 4.8 =

• 6.1

• 7.1

• 6.2

• 7.2

Multiple Choice

86.04 + 4.04

• 9.044
• 9044
• 90.08
• 90.44

Multiple Choice

7.9 + 18.72

• 2662
• 26.62
• 1
• 25.62

Multiple Choice

0.89 + 4.59

• .548
• Hot Dog
• 5.48
• 548

Multiple Choice

0.56-0.23

• 0.32

• 0.45

• 0.33

• 1.2

Multiple Choice

4.50-3.25

• 1.25

• 2.5

• 1.5

• 0.75

Multiple Choice

1.8-0.9

• 0.9

• 2.7

• 0.8

• 2.2

Multiple Choice

1.24-0.7

• 0.44

• 1.4

• 0.55

• 0.54