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Arithmetic Homework Help : Decimal Subtraction

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


1.    7.1
− 4.3
Answer: 2.8
71 − 43 = 28
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place.
Thus, 7.1 − 4.3 = 2.8

2.    68.8
− 29.3
Answer: 39.5
 688 − 293 = 395 
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place..
Thus, 68.8 − 29.3 = 39.5

3.    0.67
− 0.32 
Answer: 0.35
67 − 32 = 35 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 0.67 − 0.32 = 0.35


4.    8.66
− 4.92
Answer: 3.74
866 − 492 = 374 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 8.66 − 4.92 = 3.74

5.    50.58
− 18.55
Answer: 32.03
5058 − 1855 = 3203 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 50.58 − 18.55 = 32.03

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