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Cornerstone · Grades 3–5 Keystones #1 15 July 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 July 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 69 + 29

    Answer: 89
  2. 2. Algebra Two-step equations

    Solve: 7x - 7 = 84

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 64 in the ratio 3:1

    Answer: 48 and 16
  5. 5. Statistics Mean

    Find the mean of: 8, 6, 3, 7

    Answer: 6