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Arithmetic Homework Help : Decimal Addition

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Type the sum obtained on adding the following decimals.


1.    3.0
+ 3.5
Answer: 6.5
 30  + 35  = 65 
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 3.0 + 3.5 = 6.5 

2.    30.7
+ 19.4
Answer: 50.1
 307  + 194  = 501 
There is 1 decimal place in the numbers being added.
So the sum must have 1 decimal place.
Thus, 30.7 + 19.4 = 50.1 

3.    0.16
+ 0.29
Answer: 0.45
 16  + 29  = 45
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 0.16  + 0.29 = 0.45


4.    4.84
+ 2.61
Answer: 7.45
 484  + 261  = 745 
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 4.84 + 2.61 = 7.45

5.    44.85
+ 41.79
Answer: 86.64
 4485 + 4179 = 8664
There are 2 decimal places in the numbers being added.
So the sum must have 2 decimal places.
Thus, 44.85  + 41.79  = 86.64

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