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Cornerstone · Grades 3–5 Keystones #1 4 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 4 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 2⁄4

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x - 7 = 18

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 14cm

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 4:1:4

    Answer: 56, 14 and 56
  5. 5. Statistics Mean

    Calculate the mean of: 43, 24, 37, 47, 25, 19, 16

    Answer: 30.1

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