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Cornerstone · Grades 3–5 Keystones #1 22 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 6x + 9 = 57

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 104 in the ratio 3:3:2

    Answer: 39, 39 and 26
  5. 5. Statistics Mean

    Find the mean of: 19, 17, 6

    Answer: 14

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