which is greater, 3/8 or 2/5 ?
use a common denominator
Enter your answer and show all the steps that you use to solve this problem in the space provided.
Harry rides his bike
25
3
8
miles. Karen rides her bike
25
2
5
miles. Who rides farther?
5 answers
I need help
simple.
just subtract 25 2/5 from 25 3/8
just subtract 25 2/5 from 25 3/8
First, find the least common multiple of 8 and 5.
8x5=40, so the least common multiple is 40.
Multiply 3 and 8 by 5.
3x5=15
8x5=40
This makes the fraction 15/40
Multiply 2 and 5 by 8.
2x8=16
5x8=40
This makes the fraction 16/40
Now, compare 16/40 and 15/40
16/40>15/40, so 25 and 3/8 < 25 and 2/5
Hope this helps
8x5=40, so the least common multiple is 40.
Multiply 3 and 8 by 5.
3x5=15
8x5=40
This makes the fraction 15/40
Multiply 2 and 5 by 8.
2x8=16
5x8=40
This makes the fraction 16/40
Now, compare 16/40 and 15/40
16/40>15/40, so 25 and 3/8 < 25 and 2/5
Hope this helps
@Poncho did you get a 100% by doing it this way?
2 answers