Answer:
We find the fraction of a number by doing two steps: first, multiply the whole number by the numerator, and then divide the product we get by the denominator.
multiplying fraction by a number
Let's solve real-world problems about fractions of a number.
Word Problem Examples
cookies
Jane baked 24 chocolate chip cookies. She gave 1/3 of the cookies to her neighbor. How many cookies did she give to her neighbor?
What is the problem asking us to do?
That's right!
We need to figure out what 1/3 of 24 is.
1/3 of 24 is the same as this:
24 × 1/3 = ?
First, multiply 24 by the numerator:
24 × 1 = 24
Then, divide the product we got by the denominator:
24 ÷ 3 = 8
✅ Now we know that she gave 8 cookies to her neighbor.
Here are more questions about this problem:
Of the cookies that were left, Jane gave 3/4 to her parents, and she ate the rest. How many cookies did she give to her parents? How many cookies did she eat?
The problem tells us to figure out two things:
- the number of cookies that Jane gave to her parents,
- the number of cookies that Jane ate.
But first, we have to find out how many cookies were left, after Jane gave some away to her neighbor.
She started with 24 cookies and gave 8 cookies away.
Let's subtract:
24 - 8 = 16 cookies
So, Jane had 16 cookies left.
How many cookies did Jane's parents get if she gave them 3/4 of 16?
3/4 of 16 is the same as this:
16 × 3/4 = ?
First, multiply 16 by the numerator:
16 × 3 = 48
Then, divide the product we got by the denominator:
48 ÷ 4 = 12
✅ Jane gave 12 cookies to her parents.
Now, let's find out how many cookies Jane ate.
We know that Jane ate all the cookies that were left.
She had 16 cookies. Then, she gave 12 to her parents.
How many are left?
We need to subtract to figure this out:
16 - 12 = 4
✅ Jane ate 4 cookie
