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Cornerstone · Grades 3–5 Keystones #1 6 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 3⁄8

    Answer: 39⁄40
  2. 2. Algebra Two-step equations

    Solve: 5x - 6 = 44

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 4:1

    Answer: 72 and 18
  5. 5. Statistics Mean

    Find the mean of: 8, 6, 13

    Answer: 9

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