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Cornerstone · Grades 3–5 Keystones #1 29 June 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra Two-step equations

    Solve: 8x - 7 = 97

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 15cm

    Answer: 17.49cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 46, 47, 6, 35, 46, 39

    Answer: 36.5

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