Grade 8 Mid Module (1) Review

Translate this phrase into an algebraic expression.

8 less than the product of 4 and a number

Use the variable m to represent the unknown number.

• 8 − 4m

• 8m − 4

• 8m + 4

• 4m − 8

Translate: two times the sum of a number and five

• 2 + y + 5

• 2y + 5

• 2(y + 5)

• 2 − y + 5

Three less than twice a number

• 2x − 3

• 3x − 2

• 3 − 2x

• 2 − 3x

Simplify the following

• 5x + 6

• 11x

• 11

• 6 - 5x

Which model below matches this expression -4x+1?

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Evaluate the expression  $20-4a$   when a=3

• -23

• 8

• 32

• 9

Evaluate  $50-ab$  when a=4 and b=7

• 3

• 22

• 322

• 24

2x + 3 + x²; for x = 4

• 17
• 27
• 19
• 25

a² - b²
Evaluate if a=4 and b =2

• 4
• 20
• -4
• 12

c² + a; for a = 9 and c = 10

• 109
• 29