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Cornerstone · Grades 3–5 Keystones #1 4 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 4⁄8

    Answer: 17⁄14
  2. 2. Algebra Two-step equations

    Solve: 6x - 14 = 52

    Answer: x = 11
  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 100 in the ratio 2:1:2

    Answer: 40, 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 24, 9, 11, 49, 28, 29, 46

    Answer: 28

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