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Cornerstone · Grades 3–5 Keystones #1 29 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 29 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 19 + 39

    Answer: 49
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 20

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 200 in the ratio 4:3:1

    Answer: 100, 75 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 47, 41, 9, 35, 9, 42, 42, 39

    Answer: 33