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

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

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄8

    Answer: 37⁄40
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 36

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

    Calculate the hypotenuse when a = 6cm and b = 9cm

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 2:3

    Answer: 28 and 42
  5. 5. Statistics Mean

    Find the mean of: 12, 7, 7, 6

    Answer: 8

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