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Cornerstone · Grades 3–5 Keystones #1 12 March 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 28 + 58

    Answer: 78
  2. 2. Algebra Two-step equations

    Solve: 6x + 10 = 52

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics Mean

    Find the mean of: 9, 19, 18, 20, 12

    Answer: 15.6