Maths Quiz

What is the circumference of the circle?

• 144π

• 24π

• 12π

• π

Simplify the expression 2ab - 3a + 3ba

• 2ab

• -b + 3ba

• 2ab - 6a²b

• 5ab - 3a

Simplify the expression 3pq x (-5pq)

• -15p²q²

• -15pq

• 15p²q²

• -15p²q

If x = 4 and y = -2, calculate the value of the following expression:

5x - 7

• 47

• 13

• 27

• -17

If x = 4 and y = -2, calculate the value of the following expression:

4(x - y)

• 24

• 18

• 14

• 8

If x = 4 and y = -2, calculate the value of the following expression:

x² + 3xy

• 40

• 32

• -16

• -8

Convert the ³/8 to a percentage

• 12.5%

• 80%

• 37.5%

• 30%

What is 8% of 400?

• 80

• 3200

• 8

• 32

Increase 72 by 20%

• 158.4

• 86.4

• 14.4

• 92

Decrease 80 by 31%

• 49

• 60

• 56

• 55.2