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Cornerstone · Grades 3–5 Keystones #1 18 May 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 May 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 5 = 43

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

    Calculate the hypotenuse when a = 10cm and b = 9cm

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Share 75 in the ratio 4:1

    Answer: 60 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 14, 31, 31, 44, 9, 46, 32

    Answer: 29.6

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