Mental maths

Each side of a regular hexaGON measures 3 cm. what is its perimeter?

• 15cm

• 18cm

• 24cm

• 20cm

The radius of a circle is 7 cm. What is its diameter?

• 14cm

• 3.5cm

• 70cm

• 140cm

86 , 45, 108, 89- which is an obtuse angle?

• 86

• 45

• 108

• 89

Type 0.75 as fraction

• 1/4

• 3/4

• 2/4

• 4/3

Find area of rectangle with sides 9 cm & 4cm

• 24cm

• 27cm

• 36cm

• 45cm

click on prime number

• 6

• 9

• 11

• 15

Type fraction 18/7 as a mixed number.

• 2 1/7

• 2 4/7

• 2 3/7

• 3 1/7

Peter pays 20 % tax on his earnings. How much tax on 540 pounds?

• 108

• 100

• 54

• 106

There are 30 sweets in a packet. The ratio of green sweets to other colours is 1:4.

How many green

sweets in the packet?

• 8

• 20

• 24

• 6

Find area of triangle base 6 cm & height 4 cm

• 24 sq.cm

• 12 sq.cm

• 48 sq.cm

• 25 sq.cm