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Cornerstone · Grades 3–5 Keystones #1 20 February 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 February 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 38 + 34

    Answer: 98
  2. 2. Algebra Two-step equations

    Solve: 5x - 15 = 20

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

    Calculate the hypotenuse when a = 12cm and b = 13cm

    Answer: 17.69cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Find the mean of: 6, 5, 13, 11, 17

    Answer: 10.4