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Cornerstone · Grades 3–5 Keystones #1 20 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x - 16 = 32

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 1:2:3

    Answer: 16, 32 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 38, 45, 21, 35, 20, 12, 8. Give your answer to 2 decimal places

    Answer: 25.57

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