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Cornerstone · Grades 3–5 Keystones #1 25 March 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 25 March 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 4⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x - 7 = 49

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 1:3:1

    Answer: 27, 81 and 27
  5. 5. Statistics Mean

    Find the mean of: 9, 10, 11, 11

    Answer: 10.25

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