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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

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