Arithmetic Homework Help : Decimal Addition

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Type the sum obtained on adding the following decimals.

1. 3.2
+ 4.0

Answer: 7.2

32 + 40 = 72
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 3.2 + 4.0 = 7.2

2. 48.5
+ 22.1

Answer: 70.6

485 + 221 = 706
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 48.5 + 22.1 = 70.6

3. 0.12
+ 0.19

Answer: 0.31

12 + 19 = 31
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 0.12 + 0.19 = 0.31

4. 4.16
+ 4.37

Answer: 8.53

416 + 437 = 853
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 4.16 + 4.37 = 8.53

5. 33.02
+ 18.86

Answer: 51.88

3302 + 1886 = 5188
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 33.02 + 18.86 = 51.88