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Cornerstone · Grades 3–5 Keystones #1 20 March 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 March 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 6⁄8

    Answer: 41⁄28
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 59

    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 147 in the ratio 2:4:1

    Answer: 42, 84 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 24, 44, 18, 42, 44, 16, 25, 25

    Answer: 29.75

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