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Multiplying Decimals Worksheet

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Multiplying Decimals Worksheet

Work through each section. Estimate where asked, then calculate accurately. Show your working and include units for word problems.

Place Value and Multiplying by Powers of 10

When you multiply a decimal by 10, 100 or 1,000, the value of each digit changes. Write each answer as a number.

1.Calculate 6.3 × 10.

2.Calculate 0.084 × 100.

3.Calculate 5.027 × 1,000.

4.Calculate 0.0067 × 100.

5.Match each multiplication to its answer.

0.39 × 10
0.76 × 100
2.508 × 1,000
4.2 × 100

2,508
3.9
420
76

Multiplying Decimals

For each calculation, give a sensible estimate and then work out the exact product.

6.Estimate and calculate 4.8 × 6.

7.Estimate and calculate 15.36 × 7.

8.Estimate and calculate 3.2 × 1.4.

9.Estimate and calculate 0.85 × 0.4.

10.Which is the correct value of 2.75 × 0.8?

0.22
2.2
22
220

Decimal Multiplication in Context

Estimate each result before calculating. Include the correct units in your final answer.

11.A reusable drink bottle costs $5.85. Estimate the cost of 4 bottles, then calculate the exact cost.

12.A walking loop is 1.35 km long. Hana completes 5 laps. Estimate the distance, then calculate how far she walks altogether.

13.A parcel has a mass of 0.72 kg. What is the combined mass of 6 identical parcels? Give an estimate and an exact answer.

14.A rectangular vegetable bed is 4.2 m long and 1.8 m wide. Estimate its area, then calculate the exact area in square metres.

15.A community group buys 7 seedling trays for $8.45 each and 4 bags of compost for $6.30 each. Estimate the total cost, then calculate the exact total. How much change is left from $100?