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

Five GCSE retrieval questions · 5 July 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄4

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 7x + 7 = 28

    Answer: x = 3
  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

    Share 49 in the ratio 3:4

    Answer: 21 and 28
  5. 5. Statistics Mean

    Find the mean of: 3, 15, 9, 3, 15

    Answer: 9

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