Sec 1 Math EOY Revision

Which of the following options contain only prime numbers?

• 2,3,4,5

• 2,5,7,9

• 2,3,5,7

• 2,5,8,13

Which of the following are square numbers?

• 2

• 44

• 121

• 48

What is the highest common factor (HCF) of 18 and 30?

• 6

• 18

• 30

• 90

What is the lowest common multiple (LCM) of 30 and 36?

• 6

• 30

• 36

• 180

Fill in the blank with ' > ' or ' <'.

16 ____ 60

• >

• <

Fill in the blank with ' > ' or ' <'.

9.8 ____ - 9.9

• >

• <

Which of the following are positive integers?

• -7

• 9

• $\pi$

• $\frac{2}{9}$

Which of the following numbers are irrational?

• $\frac{2}{9}$

• $\sqrt{69}$

• 1.1

• 10

Approximate 29.8759 to 3 significant figures

• 29.876

• 29.8

• 29.9

• 30.0

How many significant figures are there in 0.021?

• 1

• 2

• 3

• 4