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Cornerstone · Grades 3–5 Keystones #1 16 July 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 16 July 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄8

    Answer: 47⁄56
  2. 2. Algebra Two-step equations

    Solve: 3x - 9 = 33

    Answer: x = 14
  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

    Divide 119 in the ratio 1:4:2

    Answer: 17, 68 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 32, 43, 10, 21, 40, 17

    Answer: 27.2

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