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

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

  1. 1. Number Adding fractions

    Add: 13 + 37

    Answer: 1621
  2. 2. Algebra Two-step equations

    Solve: 5x - 8 = 62

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 2:4:3

    Answer: 36, 72 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 42, 33, 16, 50, 7, 19, 33, 29

    Answer: 28.6