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Cornerstone · Grades 3–5 Keystones #1 13 April 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 2⁄4

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

    Solve: 2x + 13 = 35

    Answer: x = 11
  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 140 in the ratio 1:3:1

    Answer: 28, 84 and 28
  5. 5. Statistics Mean

    Find the mean of: 13, 13, 13, 11, 9

    Answer: 11.8

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