In adding 4/5 + 18/100 the least common denominator is:
A)5
B)20
C)50
D)100
E)500

Question

Quizplus · Accepted Answer

To find the least common denominator, we need to find the lowest multiple that both denominators have in common. In this case, we can see that 5 is a factor of 100, so we can use 100 as the common denominator. To get the equivalent fractions with a denominator of 100, we need to multiply 4/5 by 20/20 (which is equivalent to multiplying by 1) and 18/100 by 1/1. This gives us:

4/5 x 20/20 = 80/100
18/100 x 1/1 = 18/100

Now we can add 80/100 and 18/100 easily to get 98/100, which simplifies to 49/50.

In Adding 4/5 + 18/100 the Least Common Denominator Is