Arithmetic Homework Help : Decimal Addition

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Type the sum obtained on adding the following decimals.

1. 4.7
+ 2.7

Answer: 7.4

47 + 27 = 74
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 4.7 + 2.7 = 7.4

2. 41.9
+ 36.0

Answer: 77.9

419 + 360 = 779
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 41.9 + 36.0 = 77.9

3. 0.24
+ 0.48

Answer: 0.72

24 + 48 = 72
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 0.24 + 0.48 = 0.72

4. 4.56
+ 2.15

Answer: 6.71

456 + 215 = 671
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 4.56 + 2.15 = 6.71

5. 36.67
+ 10.79

Answer: 47.46

3667 + 1079 = 4746
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 36.67 + 10.79 = 47.46