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Arithmetic Homework Help : Decimal Subtraction

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

1.    5.8
− 1.2
Answer: 4.6
58 − 12 = 46
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place.
Thus, 5.8 − 1.2 = 4.6


2.    55.5
− 23.9
Answer: 31.6
 555 − 239 = 316 
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place..
Thus, 55.5 − 23.9 = 31.6


3.    0.72
− 0.49 
Answer: 0.23
72 − 49 = 23 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 0.72 − 0.49 = 0.23



4.    4.68
− 1.24
Answer: 3.44
468 − 124 = 344 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 4.68 − 1.24 = 3.44


5.    48.09
− 27.36
Answer: 20.73
4809 − 2736 = 2073 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 48.09 − 27.36 = 20.73


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