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Multiplying Decimals Worksheet

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Multiplying Decimals Worksheet worksheet preview

Multiplying Decimals Worksheet

🎯 WALT (We Are Learning To)

• Multiply decimal numbers using efficient strategies

• Apply multiplication of decimals in problem-solving contexts

Success Criteria - I can:

Explain the vertical-column method for multiplying decimals

Estimate products by rounding and using place value

Multiply decimals accurately and check reasonableness

Solve word problems involving decimal multiplication

📊 Part 1: Guided Practice - Basic Decimal Multiplication

1. First estimate, then calculate using the vertical-column method:

a) 3.4 × 7

Estimate: ________ × ________ = ________

b) 2.6 × 4.5

Estimate: ________ × ________ = ________

2. Complete these calculations:

a) 5.8 × 3 = ________

b) 1.25 × 8 = ________

c) 0.7 × 0.9 = ________

3. Multiple choice - Which is the best estimate for 4.8 × 6.2?

24

30

35

42

🌟 Part 2: Real-World Problem Solving

4. Shopping at the supermarket:

Sarah buys 2.5kg of apples at $4.80 per kilogram. How much does she pay for the apples?

Answer: $________

5. GST Calculation (Extension):

A laptop costs $850.00 before GST. GST in New Zealand is 15% (or 0.15). Calculate the GST amount and total price.

GST amount: $850.00 × 0.15 = $________

Total price: $850.00 + $________ = $________

6. Sports field measurement:

A rectangular field is 45.8 metres long and 32.5 metres wide. What is the area of the field?

Answer: ________ square metres

7. Challenge Problem (Advanced):

A recipe calls for 1.375 litres of milk. If you want to make 2.5 times the recipe, how much milk do you need?

Answer: ________ litres

✅ Part 3: Check Your Understanding

8. Explain in your own words why we estimate before calculating with decimals:
9. True or False? Tick the correct statements:

When multiplying decimals, the answer always has more decimal places than either factor

0.5 × 0.4 = 0.2

Multiplying by a decimal less than 1 makes the answer smaller

3.7 × 10 = 37

10. Independent Practice - Choose your level:

Level 1: Calculate 6.4 × 5

Level 2: Calculate 3.25 × 4.8

Level 3: Calculate 12.375 × 6.04

Dyslexia-friendly tip: Use colour-coded steps - Blue for estimation, Green for setting up the calculation, Red for placing the decimal point.

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