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Arithmetic Homework Help : Decimal Subtraction

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


1.    6.2
− 3.6
Answer: 2.6
62 − 36 = 26
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place.
Thus, 6.2 − 3.6 = 2.6

2.    78.8
− 47.2
Answer: 31.6
 788 − 472 = 316 
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place..
Thus, 78.8 − 47.2 = 31.6

3.    0.73
− 0.35 
Answer: 0.38
73 − 35 = 38 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 0.73 − 0.35 = 0.38


4.    3.6
− 2.48
Answer: 1.12
360 − 248 = 112 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 3.6 − 2.48 = 1.12

5.    28.80
− 12.87
Answer: 15.93
2880 − 1287 = 1593 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 28.80 − 12.87 = 15.93

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