Fractions

Question 1

How do you multiply fractions

Answer 1

We multiply straight across

Numerator × numerator

Denominator × denominator

Question 2

How do you divide fractions

Answer 2

When dividing by fractions we use the KCF rule
Keep the first fraction the same
Change the ÷ to a ×
Then flip the second fraction (so the numerator is now the denominator)
Now we can multiply as normal

Question 3

How do you add and subtract fractions

Answer 3

When adding and subtracting fractions we need to ensure the denominators are equal

Once they are equal (by multiplying the whole fraction) we can add or subtract.

E.g

4/5 + 3/8

(4×8)+(3×5)/40
32+15/40
=47/40