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Cornerstone · Grades 3–5 Keystones #1 7 May 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 7 May 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 3⁄7

    Answer: 29⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 51

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 2:3

    Answer: 32 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 46, 9, 23, 20, 33, 20, 12, 11

    Answer: 21.8

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