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Brackets in equations

Quiz by Oak National Academy: KS3 Maths (2)

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6 questions
Show answers
  • Q1
    If you multiply both sides of an equation by 2, you will maintain ______.
    equation
    the expressions
    the value
    equality
    30s
  • Q2
    True or false? Multiplying by 5 and then adding 10 is the same as adding 10 then multiplying by 5.
    False. Order matters.
    True. Both have \times 5 and +10 so they are the same function.
    30s
  • Q3
    What equation does this bar model represent?
    Question Image
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    Sorting
    30s
  • Q4
    What does this bar model represent?
    Question Image
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    Sorting
    30s
  • Q5
    Multiply both sides of this equation {1\over3}x-5 = 2x+7 by 3.
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    Sorting
    30s
  • Q6
    Which of the below is the most efficient first step to solve the equation {3\over{x}}= 10 ?
    3({3\over{x}})= 3(10)
    10x({3\over{x}})= 10x(10)
    x({3\over{x}})= x(10)
    10({3\over{x}})= 10(10)
    30s

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