Step by step
The question
Question: write 6/8 as a decimal.
1 Simplify first
6 and 8 can both be divided by 2.
Smaller numbers are easier.
So it is 3/4.
2 Make the bottom 10, 100 or 1000
A decimal is tenths, hundredths, thousandths.
So we want a bottom of 10, 100 or 1000.
4 times 25 is 100.
We multiply the top and the bottom by 25.
25/25 is 1, so the value stays the same.
3 times 25 is 75.
So we get 75/100.
3 Write the decimal
100 has 2 zeros.
So the decimal has 2 digits after the point.
75 hundredths is 0.75.
4 Check
Let's check: the decimal times the bottom should give the top.
0.75 times 8.
Forget the points: 75 times 8 is 600.
The numbers have 2 digits after the point.
So the answer has 2 too: 6.00, which is 6.
We get 6, the top.
So the answer is right!
Let's look back.
First: simplify first.
Then: make the bottom 10, 100 or 1000.
Then: write the decimal.
Last: check.