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Cornerstone · Grades 3–5 Keystones #1 27 January 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 January 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 6⁄7

    Answer: 55⁄56
  2. 2. Algebra Two-step equations

    Solve: 3x - 11 = 22

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

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 2:1

    Answer: 20 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 12, 7, 38, 29, 48, 42, 9

    Answer: 26.4

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