Expressing ratio in the form 1:n

Express 12 : 36 in the ratio of 1 : n

• 1 : 3

• 1 : 4

• 1 : 2

• 1 : 5

Express 35 : 70 in the ratio 1 : n

• 1 : 7

• 1 : 5

• 1: 3

• 1 : 2

Express 25 : 12 in the ratio 1 : n

• 1 : 2.5

• 1 : 0.48

• 1 : 0.32

• 1 : 38

Express 3 : 7 in the ratio 1 : n rounding your answer to 2 d.p.

• 1 : 3.33

• 1 : 1.33

• 1 : 2.33

• 1 : 1.34

Express 48 : 16 in the ratio n : 1

• 1 : 3

• 4 : 1

• 3 : 1

• 1 : 4

Express 3 : 2 in the ratio n : 1

• 3.5 : 1

• 1.5 : 1

• 1 : 1.5

• 1 : 3.5

For every 5 children there must be 2 adults to supervise them. Express the ratio of children to adults in form 1 : n

• 5 : 2

• 2 : 5

• 1 : 2.5

• 1 : 0.4

What is the value of n if 3 : 12 is expressed in the ratio of n : 1?

• 4

• 5

• 0.25

• 0.5

For every 50 grams of sugar, 150 grams of strawberries are needed to create jam. Express sugar : strawberries in the form 1 : n

• 3 : 1

• 1 : 4

• 1 : 3

• 4 : 1

Ellie is making a cake. The instructions say that the ratio of sugar to flour should be 1 : 3. Ellie has 250 g of sugar and 650 grams of flour. How much more flour does she need?

• 50 g

• 100 g

• 150 g

• 200 g