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Cornerstone · Grades 3–5 Keystones #1 5 February 2018 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 5 February 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 1⁄5

    Answer: 32⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x + 10 = 50

    Answer: x = 10
  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

    Share 75 in the ratio 2:3

    Answer: 30 and 45
  5. 5. Statistics Mean

    Calculate the mean of: 37, 20, 34, 40, 12, 13

    Answer: 26

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