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

Five GCSE retrieval questions · 5 April 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 4⁄8

    Answer: 9⁄14
  2. 2. Algebra Two-step equations

    Solve: 5x + 8 = 58

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 3:4:1

    Answer: 78, 104 and 26
  5. 5. Statistics Mean

    Find the mean of: 9, 11, 10, 20, 10

    Answer: 12

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