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Cornerstone · Grades 3–5 Keystones #1 13 September 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 September 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra Two-step equations

    Solve: 8x - 20 = 44

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 2:1:3

    Answer: 32, 16 and 48
  5. 5. Statistics Mean

    Find the mean of: 6, 8, 17, 2

    Answer: 8.25

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