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Cornerstone · Grades 3–5 Keystones #1 8 January 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 7⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 18 = 62

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

    Calculate the hypotenuse when a = 3cm and b = 12cm

    Answer: 12.37cm
  4. 4. Ratio Sharing in a ratio

    Divide 234 in the ratio 4:1:4

    Answer: 104, 26 and 104
  5. 5. Statistics Mean

    Find the mean of: 13, 13, 2, 19

    Answer: 11.75

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