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Cornerstone · Grades 3–5 Keystones #1 26 December 2014 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 December 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 2⁄8

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

    Solve: 5x + 10 = 40

    Answer: x = 6
  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 207 in the ratio 2:3:4

    Answer: 46, 69 and 92
  5. 5. Statistics Mean

    Calculate the mean of: 6, 19, 21, 13, 46, 22, 40, 39

    Answer: 25.75

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