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Cornerstone · Grades 3–5 Keystones #1 8 July 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 2⁄5

    Answer: 21⁄40
  2. 2. Algebra Two-step equations

    Solve: 7x - 16 = 12

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 10cm

    Answer: 12.21cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:1

    Answer: 30 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 21, 10, 12, 25, 50, 29, 17

    Answer: 23.4

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