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Arithmetic Homework Help : Decimal Subtraction

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


1.    4.9
− 2.6
Answer: 2.3
49 − 26 = 23
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place.
Thus, 4.9 − 2.6 = 2.3

2.    55.1
− 36.4
Answer: 18.7
 551 − 364 = 187 
There is 1 decimal place in the numbers being subtracted.
So the difference must have 1 decimal place..
Thus, 55.1 − 36.4 = 18.7

3.    0.35
− 0.17 
Answer: 0.18
35 − 17 = 18 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 0.35 − 0.17 = 0.18


4.    5.6
− 1.73
Answer: 3.87
560 − 173 = 387 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 5.6 − 1.73 = 3.87

5.    73.19
− 41.41
Answer: 31.78
7319 − 4141 = 3178 
There are 2 decimal places in the numbers being subtracted.
So the difference must have 2 decimal places.
Thus, 73.19 − 41.41 = 31.78

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