Decimal Models Quiz

Name:

Date:

📚 Part 1: Multiple Choice

I can: Add and subtract decimals using place-value and area models.

Success criteria: Use grids or place-value columns, align decimal points, and show regrouping or borrowing.

1. Which number sentence shows the correct sum using models for $3.45 + $2.60?

$5.95

$6.05

$6.15

$5.55

2. Subtract using a place-value model: 5.00 − 3.27 = ?

1.63

1.73

2.73

1.07

3. Which description matches the decimal 2.34 when shown by place value blocks?

2 ones, 3 tenths, 4 hundredths

23 ones, 4 tenths

2 tens, 3 ones, 4 tenths

2 ones, 34 tenths

4. Estimate and check all that apply: 4.76 + 3.29 ≈ _____

8.05

8.1

8.0

7.9

✏️ Part 2: Short Answers & Models

5. Use a place-value model (draw or show steps) to find 3.58 + 1.47. Show any regrouping and write the sum.

6. Subtract using a model or step-by-step work: 6.00 − 2.58 = _______

7. Word problem: A runner completed 2.35 miles on Monday and 1.48 miles on Tuesday. How many miles did they run in total? Show your model or calculation.

8. Word problem: The temperature rose from 32.5°F to 35.2°F. What was the change in temperature? Explain with a decimal model or calculation.

🛠 Teacher Notes, Differentiation & Extensions

Success Criteria (brief): Align decimal points, use place-value columns or 10x/100x models, show regrouping/borrowing, and label units (dollars, miles, °F).

Differentiation strategies: - For learners needing support: provide a partially filled place-value chart or base-ten blocks image. - Use one-step problems before two-step; allow calculators for checking only. - Pair students for peer modeling demonstrations.

Extension activities (for advanced learners): - Create and solve a two-step word problem that uses adding and subtracting decimals (include money and distance). - Convert a decimal sum into fraction form and compare models.

Dyslexia-friendly reading options: Use larger font, extra spacing, and color-coded place-value columns; read problems aloud; provide audio recordings of the question set.

Reminder: Show your models clearly—grids, columns, or sketches count as part of your answer.