Arithmetic Homework Help : Decimal Addition

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Type the sum obtained on adding the following decimals.

1. 2.1
+ 3.2

Answer: 5.3

21 + 32 = 53
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 2.1 + 3.2 = 5.3

2. 18.7
+ 19.6

Answer: 38.3

187 + 196 = 383
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 18.7 + 19.6 = 38.3

3. 0.4
+ 0.11

Answer: 0.51

40 + 11 = 51
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 0.4 + 0.11 = 0.51

4. 4.11
+ 1.83

Answer: 5.94

411 + 183 = 594
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 4.11 + 1.83 = 5.94

5. 10.25
+ 17.23

Answer: 27.48

1025 + 1723 = 2748
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 10.25 + 17.23 = 27.48