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Arithmetic Homework Help : Decimal Subtraction

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Quiz : Type the difference obtained on subtracting the following decimals.


1.    7.4
− 4.1
Answer: 3.3
74 − 41 = 33
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place.
Thus, 7.4 − 4.1 = 3.3

2.    47.7
− 16.5
Answer: 31.2
 477 − 165 = 312 
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place..
Thus, 47.7 − 16.5 = 31.2

3.    0.37
− 0.23 
Answer: 0.14
37 − 23 = 14 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 0.37 − 0.23 = 0.14


4.    5.43
− 1.39
Answer: 4.04
543 − 139 = 404 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 5.43 − 1.39 = 4.04

5.    65.86
− 49.28
Answer: 16.58
6586 − 4928 = 1658 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 65.86 − 49.28 = 16.58

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