Strategies to Add Decimals

Name:

Date:

📚 Part 1: Multiple Choice

1. Add: 3.46 + 2.7 = ______

5.16

6.16

5.06

6.06

2. Add: 0.85 + 0.375 = ______

1.235

1.25

1.225

1.160

3. Add: $4.25 + $0.95 = ______

$5.10

$5.20

$5.00

$5.30

4. Check all that apply: Which strategies help when adding decimals?

Line up the decimal points and add by place value

Add zeros to make the same number of decimal places

Convert to fractions and add (always easier)

Multiply to shift decimals and add as whole numbers

✏️ Part 2: Short Answers & Strategies

I can... align decimal points, add zeros for missing places, and check results by estimating.

Success criteria: My work shows decimal alignment, correct place-value addition, and a quick estimate to confirm the answer.

Differentiation strategies: Offer place-value grids or base-10 visuals for students who need concrete support; allow calculators for checking only after showing method.

Extension activity: Add three or more decimals with different lengths and explain a shortcut you used (e.g., grouping whole-number parts).

Dyslexia-friendly reading options: Read problems aloud, use larger font or colored overlays, and present one line per problem.

5. Show your work: 6.3 + 0.47 + 2.05 = ______

6. Word problem: A runner runs 1.25 miles on Monday and 0.87 miles on Tuesday. How far did they run in total? Show your answer and a quick estimate.

7. Explain which strategy you used to add decimals (aligning decimals, adding zeros, or shifting decimals). Why did you choose it?

8. Challenge: Add 12.345 + 0.876. Write the exact sum and note one step that helped you keep the digits organized.

Strategies to Add Decimals

Strategies to Add Decimals

📚 Part 1: Multiple Choice

✏️ Part 2: Short Answers & Strategies

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