before finding 4 ➗ 2/5, it will help to know the number of 1/5s in 4.
How can you find the number of 1/5s in 4 using multiplication?
To find the number of fifths, multiply 4 by ?. There are ? fifths in all.
To find the number of 1/5s in 4, you can multiply 4 by 5 (the denominator of the fraction):
4 x 5 = 20
So, there are 20 fifths in 4.
How can you use division to find the number of groups of 2/5? Divide 20 by ?. There are ? groups of 2 fifths.
To find the number of groups of 2/5 in 20, you can divide 20 by 2 (the numerator of the fraction):
20 ÷ 2 = 10
So, there are 10 groups of 2 fifths in 20.
Divide 20 by ???. There are 10 groups of fifths.
To find the answer to the division problem 20 ÷ 2/5, you flip the second fraction and multiply:
20 ÷ 2/5 = 20 x 5/2
= 100/2
= 50
Therefore, there are 50 groups of fifths in 20.