Mathematics Basic 8

Find the HCF of 21, 35 and 42

• 2

• 3

• 7

• 8

Convert 37_ten to binary number

• 100101

• 1011101

• 111001

• 100100

Solve for x,

2x - 3 = 5

• 2

• 4

• 3

• 5

Express 345000 to standard form

• 3.45 x 10⁵

• 3 x 10³

• 3.2 x 10⁴

• 3 x 10⁴

Write in ordinary form:

5.0 x 10^-4

• 0.005

• 0.0005

• 0.05

• 5.000

Express 150 as a product of prime in index form

• 2³ x 3⁴ x 5²

• 21 x 31 x 52

• 2² x 3³ x 5³

• 2¹ x 3¹ x 5²

The following are multiples of 12 EXCEPT

• 12

• 36

• 40

• 24

The numbers 2, 3 and 5 are factors of the following numbers EXCEPT

• 30

• 120

• 60

• 23

What is the square root of 784?

• 28

• 20

• 32

• 12

What is the smallest number by which 162 must be multiplied to make it a perfect square

• 4

• 2

• 3

• 7