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Cornerstone · Grades 3–5 Keystones #1 2 November 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄8 + 1⁄3

    Answer: 11⁄24
  2. 2. Algebra Two-step equations

    Solve: 5x + 3 = 58

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 3:1:3

    Answer: 72, 24 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 43, 21, 46, 18, 44, 42. Give your answer to 2 decimal places

    Answer: 35.67

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