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Cornerstone · Grades 3–5 Keystones #1 20 January 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 7⁄8

    Answer: 57⁄56
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 40

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

    Calculate the hypotenuse when a = 6cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics Mean

    Find the mean of: 10, 3, 14

    Answer: 9

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