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Lesson 5: Dividing fractions and whole numbers word problems

# Divide fractions: FAQ

## What does it mean to divide fractions?

When we divide one fraction by another, we're finding out how many times one fraction fits into another. For example, $\frac{1}{2}÷\frac{1}{4}$ tells us how many one-fourths are in one-half.
Try it yourself with these exercises:

## How is dividing fractions related to multiplying fractions?

When we divide fractions, we can use the reciprocal of the divisor (the fraction we are dividing by) to multiply instead.
For example, $\frac{1}{2}÷\frac{1}{4}=\frac{1}{2}×\frac{4}{1}=2$.
Try it yourself with this exercise:

## How can we use visuals to help us understand fraction division?

We can use pictures, models, or diagrams to show how dividing fractions works. For example, we can show $\frac{1}{2}÷\frac{1}{4}$ by drawing a half circle and dividing it into four equal parts to see that there are two one-fourths in one-half.
Try it yourself with these exercises:

## What is a unit fraction and how do we divide with them?

A unit fraction is a fraction with a numerator of 1. For example, $\frac{1}{2}$, $\frac{1}{3}$, and $\frac{1}{4}$ are all unit fractions.
When we divide a unit fraction by a whole number, we multiply the denominator by the whole number. For example, $\frac{1}{2}÷2=\frac{1}{4}$.
When we divide a whole number by a unit fraction, we multiply the whole number by the reciprocal of the unit fraction. For example, $2÷\frac{1}{2}=2×\frac{2}{1}=4$.
Try it yourself with these exercises:

## What are some common mistakes people make when dividing fractions?

Some common mistakes include:
• forgetting to find the reciprocal of the divisor when using the multiplication method
• dividing the numerators instead of multiplying them when using the multiplication method
• forgetting to simplify the answer when possible

## Want to join the conversation?

• Yeah It Just Takes A Lot Of Practice To Understand But If Anyone Has Any Questions I Can Help Answer Them Just Comment!
• Many people don't understand fractions. but it may be essential for later grades |Or stuff like cooking|
• Goodbye MatPat you will be missed and will hold a place in everyone's heart :(
• Who comes up with these scenarios
• Thank you Khan Academy for teach me.
• I wov that pizza
• Everyone pls like so everyone can know this trick kcf
1/2 divided by 2/3 equals 2/1 multiply 3/2
• Not sure what kcf is but 1/2 ÷ 2/3 does not equals to 2/1 ÷ 3/2.
Proof: 1/2 ÷ 2/3 = 1/2 x 3/2 = 3/4
2/1 x 3/2 = 6/2 (or) 3

Maybe you meant 1/2 divided by 2/3 equals 1/2 multiply 3/2
ie., keep (1/2) change sign (÷ into x) and flip numerator (2/3 into 3/2)
This makes sense more...