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Arithmetic Homework Help : Decimal Addition

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Type the sum obtained on adding the following decimals.


1.    3.5
+ 3.7
Answer: 7.2
 35  + 37  = 72 
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 3.5 + 3.7 = 7.2 

2.    13.3
+ 36.3
Answer: 49.6
 133  + 363  = 496 
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 13.3 + 36.3 = 49.6 

3.    0.19
+ 0.41
Answer: 0.6
 19  + 41  = 60
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 0.19  + 0.41 = 0.6


4.    4.51
+ 3.69
Answer: 8.2
 451  + 369  = 820 
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 4.51 + 3.69 = 8.2

5.    49.26
+ 28.66
Answer: 77.92
 4926 + 2866 = 7792
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 49.26  + 28.66  = 77.92

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