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Cornerstone · Grades 3–5 Keystones #1 7 November 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄3

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x - 6 = 14

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 9cm

    Answer: 9.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 1:1:4

    Answer: 20, 20 and 80
  5. 5. Statistics Mean

    Find the mean of: 2, 2, 12, 4, 13

    Answer: 6.6

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