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Cornerstone · Grades 3–5 Keystones #1 20 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 78 + 26

    Answer: 2924
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 45

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

    Calculate the hypotenuse when a = 5cm and b = 8cm

    Answer: 9.43cm
  4. 4. Ratio Sharing in a ratio

    Divide 77 in the ratio 1:3:3

    Answer: 11, 33 and 33
  5. 5. Statistics Mean

    Find the mean of: 12, 19, 2, 5

    Answer: 9.5