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Cornerstone · Grades 3–5 Keystones #1 23 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 5⁄6

    Answer: 43⁄30
  2. 2. Algebra Two-step equations

    Solve: 7x + 14 = 63

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 4cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 220 in the ratio 3:4:4

    Answer: 60, 80 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 6, 21, 5, 39, 17, 9, 14

    Answer: 15.9

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