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Arithmetic Homework Help : Decimal Subtraction

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


1.    3.2
− 1.4
Answer: 1.8
32 − 14 = 18
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place.
Thus, 3.2 − 1.4 = 1.8

2.    32.9
− 18.4
Answer: 14.5
 329 − 184 = 145 
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place..
Thus, 32.9 − 18.4 = 14.5

3.    0.93
− 0.49 
Answer: 0.44
93 − 49 = 44 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 0.93 − 0.49 = 0.44


4.    4.79
− 3.52
Answer: 1.27
479 − 352 = 127 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 4.79 − 3.52 = 1.27

5.    65.48
− 43.93
Answer: 21.55
6548 − 4393 = 2155 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 65.48 − 43.93 = 21.55

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