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Cornerstone · Grades 3–5 Keystones #1 8 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x - 15 = 62

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

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

    Answer: 15.56cm
  4. 4. Ratio Sharing in a ratio

    Share 114 in the ratio 1:2

    Answer: 38 and 76
  5. 5. Statistics Mean

    Calculate the mean of: 10, 5, 46, 26, 8, 7

    Answer: 17

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