Solution: 78/1 as a decimal is 78
Methods
Method 1 – Explanation using the division method:
Put in a nutshell, a fraction is written in terms of two parts separated by a line in between: the number above the line is called the numerator and the number below the line is called the denominator. To solve this question, we can use the division method to get a decimal: simply divide the numerator 78 by the denominator 1 to get the decimal:
78 (numerator) ÷ 1 (denominator) = 78
That’s it! When you convert 78/1 to a decimal, 78 is your answer.
Method 2 – Explanation using the factors of 10 method:
Another method is to change the denominator to a power of 10 (like 10, 100, 1000 etc.). This way, the fraction will be coming simpler to compute.
Even if our denominator is not a power of 10, we can make it one. If the denominator is a factor of a power of 10, like 2, 4, 5, 8, 10, 16, 20, 25, 40, 50 and so on, then we can convert them into a power of 10. Since our denominator is 1, we can convert it because it is a factor of a power of 10.
To do that, we multiply 1 by 10 to make the denominator 10. And since we multiplied the denominator by 10, we also need to multiply the numerator by 10 too:
78
∗
10
1
∗
10
=
780
10
=
78
\frac{78 * 10}{1 * 10} = \frac{780}{10} = 78
1 ∗ 10 78 ∗ 10 = 10 780 = 78
And finally, you get 78 as your answer when you convert 78/1 to a decimal.
Master fraction to decimal conversions
If this problem was a little difficult or you want to practice your skills on another one, give it a go on any one of these too!
What is 129/27 as a decimal?
What is 6/123 as a decimal?
What is 75/146 as a decimal?
What is 56/46 as a decimal?