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Cornerstone · Grades 3–5 Keystones #1 4 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 8x - 9 = 63

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 4:1

    Answer: 28 and 7
  5. 5. Statistics Mean

    Calculate the mean of: 20, 31, 20, 47, 26, 17, 24

    Answer: 26.4

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