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Cornerstone · Grades 3–5 Keystones #1 26 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 26 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 610 + 110

    Answer: 710
  2. 2. Algebra Two-step equations

    Solve: 3x - 8 = 31

    Answer: x = 13
  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 234 in the ratio 1:4:4

    Answer: 26, 104 and 104
  5. 5. Statistics Mean

    Calculate the mean of: 29, 39, 29, 32, 26, 35, 5, 24

    Answer: 27.4