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Cornerstone · Grades 3–5 Keystones #1 15 August 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 2⁄8

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 2x - 18 = 4

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 1:4:1

    Answer: 21, 84 and 21
  5. 5. Statistics Mean

    Find the mean of: 17, 19, 9

    Answer: 15

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