To convert the decimal 0.8 into a fraction, we can follow a simple process. The decimal 0.8 means 8 tenths, since the digit ‘8’ is in the tenths place. Thus, we can write it as:
0.8 = 8/10
Next, we can simplify this fraction. Both the numerator (8) and the denominator (10) can be divided by their greatest common divisor, which is 2:
8 ÷ 2 = 4
10 ÷ 2 = 5
Therefore, when we simplify 8/10, we get:
0.8 = 4/5
In conclusion, the decimal 0.8 as a fraction is 4/5.