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Cornerstone · Grades 3–5 Keystones #1 19 June 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 June 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄5

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 39

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Divide 136 in the ratio 1:1:2

    Answer: 34, 34 and 68
  5. 5. Statistics Mean

    Find the mean of: 14, 18, 11, 15

    Answer: 14.5

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