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Cornerstone · Grades 3–5 Keystones #1 16 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄6

    Answer: 5⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 70

    Answer: x = 8
  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 192 in the ratio 2:1:1

    Answer: 96, 48 and 48
  5. 5. Statistics Mean

    Find the mean of: 6, 3, 23, 12, 6

    Answer: 10

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