Arithmetic Homework Help : Decimal Addition

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Type the sum obtained on adding the following decimals.

1. 1.5
+ 2.4

Answer: 3.9

15 + 24 = 39
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 1.5 + 2.4 = 3.9

2. 32.5
+ 46.1

Answer: 78.6

325 + 461 = 786
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 32.5 + 46.1 = 78.6

3. 0.12
+ 0.23

Answer: 0.35

12 + 23 = 35
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 0.12 + 0.23 = 0.35

4. 3.59
+ 4.27

Answer: 7.86

359 + 427 = 786
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 3.59 + 4.27 = 7.86

5. 45.44
+ 36.30

Answer: 81.74

4544 + 3630 = 8174
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 45.44 + 36.30 = 81.74