Unit 6 Expressions and Equations

Which of the following is NOT a way to represent multiplication as shown in the learning material?

• 3 × m

• 3 • m

• 3m

• m/3

Why is the letter 'x' not used very often to represent multiplication in algebra?

• Because it is too difficult to write.

• Because it can be confused with the variable 'x'.

• Because it is not a standard mathematical symbol.

• Because it takes up too much space.

What is the value of 'm' in the equation 5 • m = 20?

• 4

• 5

• 15

• 25

What is the value of 'n' in the equation 7 + n = 24?

• 17

• 31

• 24

• 7

What is the value of 'b' in the equation 3b = 48?

• 16

• 15

• 144

• 51

What is the value of x in the equation x + 12 = 26?

• 14

• 13

• 38

• 11

What is the value of m in the equation 7 · m = 21?

• 2

• 3

• 7

• 14

What is the value of x in the equation 34 + x = 81?

• 47

• 115

• 45

• 17

What is the value of x in the equation 4x = 96?

• 24

• 384

• 92

• 23

What is the value of x in the equation 3x = 426?

• 142

• 129

• 128

• 140