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Cornerstone · Grades 3–5 Keystones #1 4 September 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 September 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 3⁄5

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 33

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

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Divide 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 19, 37, 41, 35, 9, 22, 21, 22

    Answer: 25.75

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