Year 8 Warm-Up Quiz 28 March

10(f + 5)

• 10f + 50
• f + 50 
• 10f + 5 
• b + c 

Which of the following is the correct expansion of:
5(r - 2)?

• 5r - 2
• 5r +2
• 5r + 10
• 5r - 10

Which of the following is the correct expansion of:
a(a - 10)?

• a² - 10a
• 2a - 10
• 2a² - 10
• a - 10a²

Which of the following is the correct expansion of:
3p(4p - 7q)?

• 7p - 10pq
• 12pq - 21q²
• 9q
• 12p² - 21pq

-2a(3+b)

• -6a-2ab
• -6a+2ab

Expand and Simplify 3(x+4)+1

• 3x+13
• 3x+7
• 3x+11
• 3x+15

11b+7=40

• 45

• 8

• 4

• 3

4x + 7 = 23

• 4

• 7.5

• 64

• -4

• Add 7 to both sides. Solution is x=19.

• Subtract 7 to both sides. The solution is x=5.

• Multiply both sides by 7. The solution is x = 84.

• Subtract 12 on both sides. The solution is x=-5.

10x + 9 = 4x - 9

• x = 0

• x = 3

• x = -3

• x = -18