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Cornerstone · Grades 3–5 Keystones #1 8 April 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 April 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 47 + 48

    Answer: 1514
  2. 2. Algebra Two-step equations

    Solve: 7x - 9 = 82

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 1:2:1

    Answer: 40, 80 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 25, 14, 38, 24, 11, 19, 34

    Answer: 23.6