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Cornerstone · Grades 3–5 Keystones #1 11 April 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄8

    Answer: 9⁄20
  2. 2. Algebra Two-step equations

    Solve: 4x - 11 = 33

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 7cm

    Answer: 10.63cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 3:2:3

    Answer: 78, 52 and 78
  5. 5. Statistics Mean

    Calculate the mean of: 11, 33, 11, 27, 32, 47, 26

    Answer: 26.7

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