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Cornerstone · Grades 3–5 Keystones #1 29 May 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 May 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 1⁄4

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

    Solve: 3x - 8 = 31

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 234 in the ratio 4:2:3

    Answer: 104, 52 and 78
  5. 5. Statistics Mean

    Find the mean of: 23, 7, 8, 18

    Answer: 14

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