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Cornerstone · Grades 3–5 Keystones #1 22 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄4

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 44

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 14cm

    Answer: 15.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 55 in the ratio 3:1:1

    Answer: 33, 11 and 11
  5. 5. Statistics Mean

    Calculate the mean of: 15, 17, 38, 21, 46, 49, 39

    Answer: 32.1

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