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Cornerstone · Grades 3–5 Keystones #1 18 May 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 May 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄8 + 1⁄6

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x - 20 = -8

    Answer: x = 6
  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 174 in the ratio 1:4:1

    Answer: 29, 116 and 29
  5. 5. Statistics Mean

    Calculate the mean of: 35, 32, 15, 40, 10, 36

    Answer: 28

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