Let's solve each of these decimal multiplication problems step by step. The key to multiplying decimals is:
1.
Ignore the decimal points and multiply the numbers as if they were whole numbers.
2.
Count the total number of decimal places in both numbers.
3.
Place the decimal point in the product so that it has the same number of decimal places as the total from step 2.
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Problem 1: 1.1 × 1.3
- Multiply: 11 × 13 = 143
- Count decimal places: 1 (in 1.1) + 1 (in 1.3) = 2 decimal places
- Place decimal: 1.43
✔ Answer: 1.43
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Problem 2: 2.4 × 3.1
- Multiply: 24 × 31 = 744
- Decimal places: 1 + 1 = 2
- Place decimal: 7.44
✔ Answer: 7.44
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Problem 3: 4.5 × 5.3
- Multiply: 45 × 53 = 2385
- Decimal places: 1 + 1 = 2
- Place decimal: 23.85
✔ Answer: 23.85
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Problem 4: 4.1 × 3.3
- Multiply: 41 × 33 = 1353
- Decimal places: 1 + 1 = 2
- Place decimal: 13.53
✔ Answer: 13.53
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Problem 5: 5.4 × 2.1
- Multiply: 54 × 21 = 1134
- Decimal places: 1 + 1 = 2
- Place decimal: 11.34
✔ Answer: 11.34
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Problem 6: 6.5 × 5.2
- Multiply: 65 × 52 = 3380
- Decimal places: 1 + 1 = 2
- Place decimal: 33.80 → which simplifies to
33.8
✔ Answer: 33.8
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✔ Final Answers:
1.
1.43
2.
7.44
3.
23.85
4.
13.53
5.
11.34
6.
33.8
Let me know if you'd like a visual explanation or step-by-step long multiplication!
Parent Tip: Review the logic above to help your child master the concept of multiplying decimals practice sheets.
