lesson

Updated 1 month ago Β· 5 views
Imagine you have 321β cups of flour, and each mini cake recipe needs 161β cups. How many mini cakes can you bake?
To find out, we need to divide one mixed number by another: 321βΓ·161β.
Step 1: Change to Improper Fractions
You cannot divide mixed numbers directly by dividing the whole numbers and the fractions separately. First, convert both mixed numbers into improper fractions, which are fractions where the top number is equal to or greater than the bottom number.
πInteractive diagram
Now our problem looks like regular fraction division: 27βΓ·67β. How do we divide fractions again?
Step 2: Multiply by the Reciprocal
Dividing by a fraction is the same as multiplying by its reciprocal, which is the fraction flipped upside down. The reciprocal of 67β is 76β.
πInteractive diagram
So 321βΓ·161β=3. You can make exactly 3 complete mini cakes.
What happens if the answer does not divide evenly into a whole number? Let's look at another example.
Worked Example: Fraction Quotients
Let's solve 232βΓ·141β step by step.