Mental Maths competition

15 x 12 has the same product as

• 30 x 10

• 30 x 6

• 20 x 6

What is the perimeter of a regular hexagon with side length 5cm

• 30 cm

• 30 m

• 25cm

21 x 12 =

• 20 x 13

• 20 x 12 + 12

• 240

Which of the following shapes has no lines of symmetry ?

• Rhombus

• Parallelogram

• Rectangle

39 divided by 100 equals....

• 3900

• 0.39

• 3.9

What is the sum of 30 plus 45 plus 55

• 110

• 120

• 130

How many days are there in the month of July?

• 30

• 29

• 31

How many cm are there in 3.25m?

• 325 cm

• 3250 cm

• 32.5 cm

1, 8, 15, 22 ___. What is the next number?

• 28

• 29

• 30

What is the area of a rectangle of sides 8cm and 5cm?

• 40 m

• 40 cm

• 40 square centimeters