###### Asked in Factoring and Multiples

Factoring and Multiples

# What is the GCF of 256 442 940 in division method?

## Answer

###### Wiki User

###### July 18, 2017 10:48PM

256/2 = 128/2 = 64/2 = 32/2 = 16/2 = 8/2 = 4/2 = 2/2 = 1

442/2 = 221/13 = 17/17 = 1

940/2 = 470/2 = 235/5 = 47/47 = 1

2 x 2^7 = 256

2 x 13 x 17 = 442

2 x 2 x 5 x 47 = 940

The GCF is 2.

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### How do you decrease 940 by 49 percent?

Two methods:
work out 49% of 940 and subtract it from 940; or
see that what will be left will be 100% - 49% = 51% of 940, so
work out 51% of 940.
That's how I decrease 940 by 49 percent. This is
me actually doing it:
"percent" means "out of 100", so 49% means 49/100, thus
49% of 940 is 49/100 x 940 = 4603/5
So decreasing 940 by 49% is 940 - 4603/5 = 4792/5 = 479.4
Alternatively:
decreasing by 49% is the same as working out 100% - 49% = 51%.
so
51% of 940 is 51/100 x 940 = 4792/5 = 479.4