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Cornerstone · Grades 3–5 Keystones #1 13 May 2017 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 May 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 2⁄7

    Answer: 11⁄14
  2. 2. Algebra Two-step equations

    Solve: 7x - 7 = 98

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 57 in the ratio 2:1

    Answer: 38 and 19
  5. 5. Statistics Mean

    Find the mean of: 17, 15, 14, 21, 8

    Answer: 15

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