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| Quiz : Type the product obtained on multiplying the following decimals. |
1. 21.0 x 2 =
Answer: 42.0210 x 2 = 420.0
There is 1 decimal place in 21.0, so the product must have 1 decimal place.
Thus, 21.0 x 2 = 42.0
2. 1.43 x 7 =
Answer: 10.01143 x 7 = 1001
There are 2 decimal places in 1.43, so the product must have 2 decimal places.
Thus, 1.43 x 7 = 10.01
3. 7.46 x 2 =
Answer: 14.92746 x 2 = 1492
There are 2 decimal places in 7.46, so the product must have 2 decimal places.
Thus, 7.46 x 2 = 14.92
4. 81.3 x 8 =
Answer: 650.4813 x 8 = 6504
There is 1 decimal place in 81.3, so the product must have 1 decimal place.
Thus, 81.3 x 8 = 650.4
5. 7.89 x 10 =
Answer: 78.9789 x 10 = 7890
There are 2 decimal places in 7.89, so the product must have 2 decimal places.
Thus, 7.89 x 10 = 78.9 = 78.9
Tip: When 7.89 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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