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Cornerstone · Grades 3–5 Keystones #1 31 December 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 5⁄7

    Answer: 32⁄35
  2. 2. Algebra Two-step equations

    Solve: 8x - 18 = 14

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 1:3

    Answer: 14 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 16, 17, 9, 20, 35, 9

    Answer: 17.7

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