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Cornerstone · Grades 3–5 Keystones #1 30 June 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄8

    Answer: 31⁄40
  2. 2. Algebra Two-step equations

    Solve: 8x - 9 = 39

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 25, 6, 40, 30, 13, 17, 23

    Answer: 22

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