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Cornerstone · Grades 3–5 Keystones #1 17 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 1⁄7

    Answer: 25⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x + 6 = 18

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics Mean

    Find the mean of: 14, 2, 12, 13, 24

    Answer: 13

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