Sums and Differences with Decimals Gizmo

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Sums and Differences with Decimals

Find the sum or difference of two decimal numbers using area models. Find the decimals and their sum or difference on a number line.

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Assessment Questions (4):

What addition problem is modeled by the following grid?
- A. 1.5 + 0.15 = 1.65
- B. 1.45 + 0.2 = 1.65
- C. 1.25 + 0.4 = 1.65
- D. 1.2 + 0.45 = 1.65
What subtraction problem is modeled by the following grid?
- A. 1.57 − 0.33 = 1.24
- B. 1.9 − 0.33 = 1.57
- C. 1.9 − 0.37 = 1.53
- D. 2 − 0.1 = 1.9
What is 1.33 + 0.4?
- A. 1.37
- B. 1.77
- C. 4.33
- D. 1.73
What is 2.45 − 0.37?
- A. 2.08
- B. 2.82
- C. 2.8
- D. 2.28

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