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Cornerstone · Grades 3–5 Keystones #1 20 June 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 June 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 2⁄4

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 43

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 23, 12, 6, 35, 7, 50. Give your answer to 2 decimal places

    Answer: 22.17

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