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Cornerstone · Grades 3–5 Keystones #1 11 June 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 June 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 4⁄7

    Answer: 37⁄28
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 51

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

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 1:2:1

    Answer: 40, 80 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 16, 23, 32, 31, 21, 49. Give your answer to 2 decimal places

    Answer: 28.67

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