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

Five GCSE retrieval questions · 5 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 37 + 23

    Answer: 2321
  2. 2. Algebra Two-step equations

    Solve: 8x - 13 = 91

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

    Calculate the hypotenuse when a = 12cm and b = 9cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 3:4:1

    Answer: 81, 108 and 27
  5. 5. Statistics Mean

    Find the mean of: 9, 7, 16, 15

    Answer: 11.75