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Cornerstone · Grades 3–5 Keystones #1 8 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄3

    Answer: 13⁄15
  2. 2. Algebra Two-step equations

    Solve: 5x + 12 = 42

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 128 in the ratio 1:3:4

    Answer: 16, 48 and 64
  5. 5. Statistics Mean

    Find the mean of: 15, 10, 13, 14

    Answer: 13

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