Arithmetic Homework Help : Decimal Addition

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Type the sum obtained on adding the following decimals.

1. 2.1
+ 4.0

Answer: 6.1

21 + 40 = 61
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 2.1 + 4.0 = 6.1

2. 24.4
+ 24.6

Answer: 49.0

244 + 246 = 490
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 24.4 + 24.6 = 49.0

3. 0.26
+ 0.4

Answer: 0.66

26 + 40 = 66
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 0.26 + 0.4 = 0.66

4. 2.05
+ 2.51

Answer: 4.56

205 + 251 = 456
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 2.05 + 2.51 = 4.56

5. 29.25
+ 22.74

Answer: 51.99

2925 + 2274 = 5199
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 29.25 + 22.74 = 51.99