Finding a fraction of a number

Fraction of a number.

Alfredo has to read 24 pages in his science book by Friday. If he has completed 3/4 of the assignment, how many pages has he read?

We need to find 3/4 of 24. There are two ways to do that.

3/4 x 24/1
1. multiply 3/x 24 = 72 and 4 x 1 =4
2. that gives us 72/4 which is a division problem
3. 72 divided by 4 = 18
4. So 3/4 of 24 is 18.
5. So Alfredo has read 18 pages.

or

3/4 of 24
1. 24 divided by 4 = 6
2. 6 = 1/4 of 24
3. 1/4 + 1/4 + 1/4 = 3/4
4. 6 + 6 + 6 = 18
5. 3/4 of 24 is 18
6. So Alfredo has read 18 pages.