Fractions & Percentages

Question 1

How do you work out a fraction of a quantity?

Answer 1

Divide the quantity by the bottom (denominator) and times (multiply) it by the top (numerator)

Question 2

What do you divide by to work out 25%?

Answer 2

4

Question 3

What do you divide by to work out 10%?

Answer 3

10

Question 4

What sum do you do to work out 75%?

Answer 4

Divide by 4 and times by 3
Alternative answer:
find three-quarters

Question 5

What do you do to work out 30% without a calculator?

Answer 5

Divide by 10 and times by 3
Alternative answer:
find 10% and times by 3

Question 6

What sum do you do to work out 70% without a calculator?

Answer 6

Divide by 10 and times by 7
Alternative answer:
find 10% and times by 7

Question 7

What sum do you do to work out 3% without a calculator?

Answer 7

Divide by 100 and times by 3
Alternative answer:
find 1% and times by 3

Question 8

What sum do you do to work out 5% without a calculator?

Answer 8

Divide by 100 and times by 5
Alternative answer 1:
find 1% and times by 5
Alternative answer 2:
find 10% and half it

Question 9

How do you work out a percentage of a quantity with a calculator?

Answer 9

Either change the percentage to a decimal and multiply by the quantity or divide the quantity by 100 and multiply by the percentage.

Question 10

What fraction is the same as 33 1/3 %?

thirty-three and one third percent

Answer 10

1/3

Question 11

What fraction is the same as 66 2/3 %

sixty-six and two-thirds percent

Answer 11

2/3