Dividing small numbers by large numbers: 60 divided by 105 and 17 divide by 234

Illtry

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Dec 23, 2016
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How do you solve 60 divided by 105 and 17 divide by 234. Small numbers by large numbers. Without a calculator. Long division method or short division method. Thank you
 
How do you solve 60 divided by 105 and 17 divide by 234. Small numbers by large numbers. Without a calculator. Long division method or short division method. Thank you
When both the numerator and the denominators are composite numbers, I quickly check whether common factors can be eliminated. For example,

(60)/(105) = (3 * 5 * 4)/(3 * 5 * 7) = 4/7 = 0.571428 (repeat) .... by long mental division

for 17/234 .... we do not have any common factor.

So,

17/234 = 0.0726... long paper-pencil division

I do not know anything about short-division method.
 
4/7 = 0.571428 (repeat) .... by long mental division

So,

17/234 = 0.0726... long paper-pencil division

Illtry, I expect you would be using the latter method, because 1) the former
method is more likely to trip you up and 2) you won't have a paper record to see
where you went wrong in the division.
 
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