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| Quiz : Type the product obtained on multiplying the following decimals. |
1. 47.8 x 7 =
Answer: 334.6478 x 7 = 3346.0
There is 1 decimal place in 47.8, so the product must have 1 decimal place.
Thus, 47.8 x 7 = 334.6
2. 4.97 x 3 =
Answer: 14.91497 x 3 = 1491
There are 2 decimal places in 4.97, so the product must have 2 decimal places.
Thus, 4.97 x 3 = 14.91
3. 7.64 x 3 =
Answer: 22.92764 x 3 = 2292
There are 2 decimal places in 7.64, so the product must have 2 decimal places.
Thus, 7.64 x 3 = 22.92
4. 86.1 x 9 =
Answer: 774.9861 x 9 = 7749
There is 1 decimal place in 86.1, so the product must have 1 decimal place.
Thus, 86.1 x 9 = 774.9
5. 1.02 x 10 =
Answer: 10.2102 x 10 = 1020
There are 2 decimal places in 1.02, so the product must have 2 decimal places.
Thus, 1.02 x 10 = 10.2 = 10.2
Tip: When 1.02 is multiplied by 10 , the decimal point shifts to the right by 1 place(s).
Try the Quiz : Arithmetic Homework Help : Decimal Multiplication
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