Question 1: Write an algebraic expression for: 'Five more than a number x.'

Answer: x + 5

Question 2: Express: 'Twice a number y decreased by 3.'

Answer: 2y - 3

Question 3: Translate: 'The sum of a number z and 10.'

Answer: z + 10

Question 4: Calculate the expression: 'Three times a number k, minus 4.'

Answer: 3k - 4

Question 5: If a student has x pencils and buys 7 more, write an expression for the total pencils.

Answer: x + 7

Question 6: Problem Solving: 'A garden has y rows of flowers. Each row has 4 flowers. Write an expression for the total number of flowers.'

Answer: 4y

Question 7: Real-world Application: 'A concert ticket costs $12. Write an expression for the total cost if you buy n tickets.'

Answer: 12n

Question 8: Challenge: 'A rectangle's length is 3 more than its width w. Write an expression for its perimeter.'

Answer: 2(w + (w + 3))

Question 9: Mixed Review: 'Express: 'The difference between twice a number m and 5.'

Answer: 2m - 5

Question 10: Error Analysis: 'A student wrote the expression: x + 3 = 7, and solved for x as x = 7 + 3. Identify and correct the mistake.'

Answer: The mistake is adding 3 instead of subtracting 3. Correct expression: x = 7 - 3