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Cornerstone · Grades 3–5 Keystones #1 2 December 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 December 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄5 + 1⁄4

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

    Solve: 7x + 12 = 68

    Answer: x = 8
  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 203 in the ratio 3:3:1

    Answer: 87, 87 and 29
  5. 5. Statistics Mean

    Find the mean of: 4, 22, 13

    Answer: 13

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