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Cornerstone · Grades 3–5 Keystones #1 30 June 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 2⁄5

    Answer: 19⁄35
  2. 2. Algebra Two-step equations

    Solve: 8x - 20 = 60

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

    Calculate the hypotenuse when a = 8cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 11.31cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 4:1

    Answer: 52 and 13
  5. 5. Statistics Mean

    Find the mean of: 3, 10, 11

    Answer: 8

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