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Cornerstone · Grades 3–5 Keystones #1 2 December 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 2⁄6

    Answer: 13⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 34

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 4:2:1

    Answer: 72, 36 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 43, 43, 36, 26, 20, 30

    Answer: 33

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