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Cornerstone · Grades 3–5 Keystones #1 12 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 39

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

    Calculate the hypotenuse when a = 9cm and b = 11cm

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Share 105 in the ratio 4:3

    Answer: 60 and 45
  5. 5. Statistics Mean

    Find the mean of: 4, 18, 12, 6, 14

    Answer: 10.8

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