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Cornerstone · Grades 3–5 Keystones #1 23 July 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 July 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 2⁄5

    Answer: 31⁄40
  2. 2. Algebra Two-step equations

    Solve: 6x - 10 = 38

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 133 in the ratio 3:1:3

    Answer: 57, 19 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 49, 49, 7, 29, 47, 5, 28, 46

    Answer: 32.5

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