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Cornerstone · Grades 3–5 Keystones #1 13 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 1⁄11

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

    Solve: 5x - 12 = 18

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 33, 5, 26, 15, 7, 11, 16, 44

    Answer: 19.6

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