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

Five GCSE retrieval questions · 5 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄12 + 1⁄12

    Answer: 1⁄4
  2. 2. Algebra Two-step equations

    Solve: 4x + 10 = 46

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 76 in the ratio 3:1

    Answer: 57 and 19
  5. 5. Statistics Mean

    Calculate the mean of: 30, 16, 41, 36, 6, 28, 27

    Answer: 26.3

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