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

Five GCSE retrieval questions · 1 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 4⁄8

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 24

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

    Calculate the hypotenuse when a = 6cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.23cm
  4. 4. Ratio Sharing in a ratio

    Divide 75 in the ratio 1:2:2

    Answer: 15, 30 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 45, 43, 47, 38, 36, 17. Give your answer to 2 decimal places

    Answer: 37.67

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