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Cornerstone · Grades 3–5 Keystones #1 7 March 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 7 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 4⁄5

    Answer: 31⁄20
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 42

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 48 in the ratio 1:2:1

    Answer: 12, 24 and 12
  5. 5. Statistics Mean

    Find the mean of: 19, 4, 20, 2, 15

    Answer: 12

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