Starter quiz

  • Three of the surds are like surds. Which one is not?
    • \sqrt {48}
    • 2\sqrt {27}
    • 2\sqrt {12}
    • 2\sqrt {18}  ✓
  • Three of the surds are like surds. Which one is not?
    • -5\sqrt {80}
    • -5\sqrt {30}  ✓
    • a\sqrt {20}
    • b\sqrt {45}
  • 10\sqrt {3} + a\sqrt {3} = -3\sqrt {3}. What is the value of a?
    • '-13' ✓
  • Simplify the expression \sqrt {12} + \sqrt {3} - \sqrt {27}
    • 3\sqrt {3} - \sqrt {27}
    • -4\sqrt {3}
    • 6\sqrt {3}
    • 0  ✓
  • True or false? \sqrt {20} and \sqrt {45} are like terms.
    • True
    • False ✓
  • Simplify the expression 2\sqrt {15} + 3\sqrt {20} - 7\sqrt {80}
    • 2\sqrt {15} - 100\sqrt {5}
    • 2\sqrt {15} - 22\sqrt {5}  ✓
    • 2\sqrt {15} - 4\sqrt {5}
    • 2\sqrt {15} - 2\sqrt {5}
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