Finding out what .875 as a fraction is easy. Here's a quick explanation:
Think of as 0.875 = 875/1000We choose 1000 because there are 3 numbers following the decimal point.
Look for a common divisor: 25 looks like a good place to start.
875/25 = 35
1000/25 = 40
so
875/1000 = 35/40
Can we go further?
How about dividing by 5?
35/5 = 7
40/5 = 8
so 35/40 = 7/8
How's that?