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Cornerstone · Grades 3–5 Keystones #1 17 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄7 + 6⁄8

    Answer: 33⁄28
  2. 2. Algebra Two-step equations

    Solve: 8x - 10 = 38

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 8cm

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 4:1

    Answer: 44 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 26, 15, 46, 25, 34, 10

    Answer: 26

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