Adding and Subtracting Decimals Worksheets

What is the first thing to do when adding or subtracting decimal numbers?

• add the given digits first

• move the decimal point to the left side, then subtract

• move the decimal point to the right side

• line up the decimals first, then fill in with zeros

In the problem “The sum of 2.3 and 0.045 subtracted from 10.4 is 7.655.”, the difference is 10.4.

• True

• False

Which of the following is the estimated sum of 145.99 and 7.12?

• 150

• 152

• 153

• 160

What is the result if we combine 44.8 and 789?

• 833.08

• 744.2

• 744.02

• 833.8

James brought a fresh 2-liter bottle of sweet tea to school. He drank 0.29 liter before lunch and 0.189 liter after lunch. He tried to offer the rest to Mr. Blow, but Mr. Blow said, "Seriously?!" How much tea was left at the end of the day?

Beth worked 33.25 hours last week and 23.75 this week. How many total hours did she work?

Jackson spends $12.85 on a book, $5.89 for lunch, and $2.35 for a magazine. How much money did he spend in all? (a)  

• $12.85

• $21.09

• $15.20

• $18.74

This month, Cecilia has ridden her bike 114.7 miles. BEFORE THAT, she had ridden the bike for a total of 1,468 miles. How many total miles has Cecilia ridden her bike NOW?

• 116.168 miles

• 1,582.7 miles

• 261.5 miles

• 1,353.3 miles

Xavier spent $15.68 on a shirt, $29.67 on shoes, and $14.95 on pants. How much did he spend?

• 48.20

• 48.40

• 59.20

• 60.30

-12.4 + 9.2 + 1 

Mathematical Equivalence

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