2nd Round Mental Maths

The supplement of an angle of 88° has measure

Solve by estimating each to nearest hundred. 5432 + 4321 =

• 9000

• 9700

• 9750

52 x 101 =

15 - [ 2+ ( 3 x 4)]

• 12

• 2

• 1

• 0

10 % of 450 is

• 45

• 95

• 450

Estimate 129 × 4 by rounding to the nearest ten.

What is 2.9 × 10?

A circle have __________ lines of symmetry?

• 2

• 4

• infinite

• few

36 ÷ ( 3 + 3 ) × 2

• 8

• 12

• 10

• 14

A student got 80 out of 100 marks in a test. What is the percentage of lost marks?

• 60%

• 90%

• 20%

• 80%