Mathematics Quiz

Find the equivalent to the ratio 7:21?

• 1:3

• 8:15

• 7:2

• 7:1

• 3:1

In the class there are 16 girls and 14 boys. The ratio of boys to girls is.

• 8:7

• 7:15

• 8:15

• 7:8

• 2:1

Emma buys 70% of her Christmas presents from 'Argos' and orders the rest from 'Amazon'. What proportion of her presents come from 'Amazon'?

• 3/10

• 7/10

• 3/7

• 7%

• 7:3

Calculate 7/10 + 3/4

• 2/13

• 6/5

• 10/14

• 29/20

• 21/40

Calculate 5 divided by 2/3

• 10/3

• 13/2

• 2/15

• 10/3

• 15/2

What is the perimeter of the compound shape shown?

• 31 cm

• 35 cm²

• 68 cm²

• 42 cm

• 98cm²

A bag contains 5 red marbles, 3 blue marbles, and 2 green marbles. If a marble is chosen at random, what is the probability of selecting a blue marble?

• 1

• 100

• 10/3

• 1/5

• 3/10

A spinner is just as likely to land on any sector of the board that it is on. The sectors are numbered 2, 6, 7, 12 and 15. When spun once, what is the probability of the spinner landing on a PRIME number?

• A) 2

• B) 1/5

• C) 2/5

• D) 0

• E) 1

In a fruit cake, the ratio of currants : sultanas : cherries is 7 : 4 : 1. Lucy used 420g of currants. How much fruit did she use altogether?

• A) 60 g

• B) 740 g

• C) 680 g

• D) 720 g

• E) 800 g

Simplify the expression: -4x + y - 2z + x - y + 9 - z +3x

• 9 - 3z

• x + 3y - 3z + 9

• -x -2y + 9

• x +2y +2z - 3

• -x +4z +9