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Cornerstone · Grades 3–5 Keystones #1 24 June 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 4⁄6

    Answer: 16⁄15
  2. 2. Algebra Two-step equations

    Solve: 7x + 6 = 69

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

    Calculate the hypotenuse when a = 8cm and b = 11cm

    Answer: 13.6cm
  4. 4. Ratio Sharing in a ratio

    Share 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics Mean

    Find the mean of: 19, 20, 4, 13

    Answer: 14

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