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Cornerstone · Grades 3–5 Keystones #1 21 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 2⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x - 7 = 35

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

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 2:1

    Answer: 44 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 33, 18, 9, 15, 49, 17

    Answer: 23.5

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