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Multiplication of surds

Quiz by Oak National Academy: GCSE Maths Higher (2)

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6 questions
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  • Q1
    Three of the surds are like surds. Which one is not?
    2\sqrt {12}
    \sqrt {48}
    2\sqrt {18}
    2\sqrt {27}
    30s
  • Q2
    Three of the surds are like surds. Which one is not?
    -5\sqrt {80}
    -5\sqrt {30}
    a\sqrt {20}
    b\sqrt {45}
    30s
  • Q3
    10\sqrt {3} + a\sqrt {3} = -3\sqrt {3}. What is the value of a?
    Users enter free text
    Type an Answer
    30s
  • Q4
    Simplify the expression \sqrt {12} + \sqrt {3} - \sqrt {27}
    3\sqrt {3} - \sqrt {27}
    -4\sqrt {3}
    0
    6\sqrt {3}
    30s
  • Q5
    True or false? \sqrt {20} and \sqrt {45} are like terms.
    false
    true
    True or False
    30s
  • Q6
    Simplify the expression 2\sqrt {15} + 3\sqrt {20} - 7\sqrt {80}
    2\sqrt {15} - 100\sqrt {5}
    2\sqrt {15} - 4\sqrt {5}
    2\sqrt {15} - 2\sqrt {5}
    2\sqrt {15} - 22\sqrt {5}
    30s

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