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Cornerstone · Grades 3–5 Keystones #1 19 June 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 June 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 1⁄5

    Answer: 8⁄15
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 27

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Share 126 in the ratio 4:3

    Answer: 72 and 54
  5. 5. Statistics Mean

    Find the mean of: 10, 23, 6

    Answer: 13

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