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Cornerstone · Grades 3–5 Keystones #1 9 September 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 September 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 1⁄6

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x - 15 = 50

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 10cm

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 4:3

    Answer: 32 and 24
  5. 5. Statistics Mean

    Find the mean of: 2, 16, 2, 10, 7

    Answer: 7.4

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