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Cornerstone · Grades 3–5 Keystones #1 10 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄6

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 61

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 175 in the ratio 2:3:2

    Answer: 50, 75 and 50
  5. 5. Statistics Mean

    Find the mean of: 12, 13, 11, 13, 10

    Answer: 11.8

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