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Cornerstone · Grades 3–5 Keystones #1 29 May 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 May 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 112 + 712

    Answer: 23
  2. 2. Algebra Two-step equations

    Solve: 3x - 8 = 10

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 290 in the ratio 1:2:2

    Answer: 58, 116 and 116
  5. 5. Statistics Mean

    Calculate the mean of: 28, 36, 47, 5, 23, 42

    Answer: 30.2