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As a fraction

15/60

We now look to cancel down/reduce.

So we need to find a common factor.

'2' is NOT a common factor because '15' is an 'odd' number, and will not divide by '2'.

So try '3'.

Yes!!! '3' is a common factor ; 3 x 5 = 15 and 3 x 20 = 60

So cancel down/reduce by '3'

15/60 = 5/20

Again we repeat the process.

'2' is NOT a common factor

'3' is NOT a common factor

So try '5'

Yes!!! '5' is a common factor ; 5 x 1 = 5 and 5 x 4 = 20

So cancel /reduce by '5'

5/20 = 1/4 The answer!!!!

This is '15/60' in its fully reduced form ( 1/4 ; in words one quarter).

However, your arithmetic may be more facile, and you can see that '15' is a common factor to both '15' & '60'. So you can reduce it directly to '1/4'.

NB When cancelling down/reducing fractions us prime numbers to start the reduction process. . There are millions of prime numbers, but star by using ,2,3,5,7,11,13,....

Hope that helps!!!!

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lenpollock

Lvl 17
2w ago

What else can I help you with?