Recognise equivalent expressions

Question 1

Are 5(x + 6) and 5x + 6 equivalent? (Hint: test x = 4.)

• A. Yes
• B. No

Question 2

Which expression is equivalent to 7y + 6 + y?

• A. 9y + 6
• B. 14y
• C. 8y + 6
• D. 8y² + 6

Question 3

Which expression is equivalent to 9(x + 9)?

• A. 9x + 81
• B. x + 81
• C. 9x + 18
• D. 9x + 9

Question 4

Are 4(x + 3) and 4x + 3 equivalent? (Hint: test x = 2.)

• A. Yes
• B. No

Question 5

Which expression is equivalent to 2y + 1 + 5y?

• A. 8y
• B. 7y + 1
• C. 8y + 1
• D. 10y + 1

Question 6

Which expression is equivalent to 2(x + 8)?

• A. x + 16
• B. 2x + 10
• C. 2x + 16
• D. 2x + 8

Question 7

Are 2(x + 6) and 2x + 12 equivalent? (Hint: test x = 4.)

• A. Yes
• B. No

Question 8

Which expression is equivalent to 3y + 2 + 7y?

• A. 10y + 2
• B. 11y + 2
• C. 10y² + 2
• D. 12y

Question 9

Which expression is equivalent to 6(x + 8)?

• A. x + 48
• B. 6x + 14
• C. 6x + 48
• D. 14x

Question 10

Are 6(x + 5) and 6x + 30 equivalent? (Hint: test x = 3.)

• A. Yes
• B. No

Question 11

Which expression is equivalent to 3y + 3 + 4y?

• A. 10y
• B. 12y + 3
• C. 7y² + 3
• D. 7y + 3

Question 12

Which expression is equivalent to 9(x + 9)?

• A. x + 81
• B. 9x + 81
• C. 18x
• D. 9x + 9

Question 13

Are 5(x + 5) and 5x + 5 equivalent? (Hint: test x = 5.)

• A. Yes
• B. No

Question 14

Which expression is equivalent to 6y + 3 + 2y?

• A. 11y
• B. 12y + 3
• C. 8y² + 3
• D. 8y + 3

Question 15

Which expression is equivalent to 6(x + 6)?

• A. 6x + 6
• B. 6x + 36
• C. x + 36
• D. 12x

Question 16

Are 3(x + 9) and 3x + 27 equivalent? (Hint: test x = 4.)

• A. Yes
• B. No