Integers, Powers and Roots

Find the HCF of 26 and 18.

• 6

• 2

• 3

• 4

Find the LCM of 14 and 20

• 96

• 480

• 125

• 140

Find the LCM of 23 and 15.

• 280

• 345

• 2315

• 465

Find the HCF of 40 and 32

• 8

• 6

• 4

• 2

Simplify: 2+(8÷4+3)-5

• 9

• 3

• 2

• 5

Simplify: 3-[6+(9÷-1)]-(5)^2

• -19

• -43

• 23

• 31

Simplify: (-3)(2)(-5)(-1)

• 31

• -31

• 30

• -30

Simplify: (-9)(-4)÷(-6)

• -6

• 6

• 2/3

• -2/3

Simplify: (8)÷[(-9)(-4)]

• -8/36

• 2/9

• 8/36

• -2/9

What is -3²?

• 27

• -27

• -9

• 9