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Cornerstone · Grades 3–5 Keystones #1 15 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 4⁄7

    Answer: 15⁄14
  2. 2. Algebra Two-step equations

    Solve: 7x + 13 = 62

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 50, 44, 24, 8, 42, 20, 38, 50

    Answer: 34.5

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