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Cornerstone · Grades 3–5 Keystones #1 27 November 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄4

    Answer: 21⁄20
  2. 2. Algebra Two-step equations

    Solve: 4x - 8 = 52

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 1:4:3

    Answer: 24, 96 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 38, 30, 49, 33, 16, 30, 8, 30

    Answer: 29.3

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