Starter quiz

  • This bar model represents the initial equation <Math>2x + 3 = 9</Math>. What needs to be done to the top bar to maintain equality?
    This bar model represents the initial equation 2x + 3 = 9. What needs to be done to the top bar to maintain equality?
    • +9  ✓
    • +2x
    • +(2x+3)  ✓
    • \times 1
    • \times 2  ✓
  • Which of these calculations show '6 plus 3 all multiplied by 2'?
    • 6 + 3 × 2
    • 2(6 + 3)  ✓
    • 2 × 6 + 3
    • 2 × 6 + 2 × 3  ✓
    • 6 + 3 + 6
  • Lucas manipulates the equation 2x + 8 = 6. Which of these equations could he obtain and maintain equality?
    • x + 4 = 3  ✓
    • 2x + 10 = 8  ✓
    • 10x + 8 = 30
    • 2x = 6
    • 4x + 8 = 2x + 6  ✓
  • Which expression could fill the blank on the right hand side of this equation to maintain equality?
    Which expression could fill the blank on the right hand side of this equation to maintain equality?
    • 2x + 1  ✓
    • 2x + 2
    • x + 4
    • {2x + 4}\over 2  ✓
    • x + 2  ✓
  • Which of these equations has a solution of x = 6?
    • x + 5 = −1
    • 2x − 3 = 9  ✓
    • 5 + 3x = 2x + 11  ✓
    • 10 − x = 16
    • 15 − 2x = 2x
  • Which of these is a solution to the equation 18 − 6x = 12 − 4x?
    • x = −4
    • x = −1
    • x = 0
    • x = 2
    • x = 3  ✓
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