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Cornerstone · Grades 3–5 Keystones #1 4 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 68

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 15cm

    Answer: 18.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 2:2:3

    Answer: 32, 32 and 48
  5. 5. Statistics Mean

    Find the mean of: 17, 7, 15, 3

    Answer: 10.5

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