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Cornerstone · Grades 3–5 Keystones #1 15 September 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 September 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄6

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

    Solve: 7x + 3 = 59

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 8.49cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:2:1

    Answer: 21, 42 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 7, 21, 35, 44, 28, 28, 16, 6. Give your answer to 2 decimal places

    Answer: 23.13

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