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Arithmetic Homework Help : Decimal Addition

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Type the sum obtained on adding the following decimals.


1.    1.9
+ 4.8
Answer: 6.7
 19  + 48  = 67 
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 1.9 + 4.8 = 6.7 

2.    35.6
+ 35.0
Answer: 70.6
 356  + 350  = 706 
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 35.6 + 35.0 = 70.6 

3.    0.44
+ 0.2
Answer: 0.64
 44  + 20  = 64
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 0.44  + 0.2 = 0.64


4.    4.99
+ 2
Answer: 6.99
 499  + 200  = 699 
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 4.99 + 2 = 6.99

5.    21.51
+ 36.83
Answer: 58.34
 2151 + 3683 = 5834
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 21.51  + 36.83  = 58.34

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