Add 4/40 and 80/5, Solve 4/40 + 16 0/5 as a fraction

Add 4/40 and 80/5

1^st number: 4/40, 2^nd number: 16 0/5

4/40 + 80/5 is 161/10.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 is 40

Next, find the equivalent fraction of both fractional numbers with denominator 40
For the 1st fraction, since 40 × 1 = 40,
4/40 = 4 × 1/40 × 1 = 4/40
Likewise, for the 2nd fraction, since 5 × 8 = 40,
80/5 = 80 × 8/5 × 8 = 640/40
Add the two like fractions:
4/40 + 640/40 = 4 + 640/40 = 644/40
644/40 simplified gives 161/10
So, 4/40 + 80/5 = 161/10
In mixed form: 161/10

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad