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

Five GCSE retrieval questions · 1 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 79 + 19

    Answer: 89
  2. 2. Algebra Two-step equations

    Solve: 3x - 7 = 17

    Answer: x = 8
  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 330 in the ratio 4:3:4

    Answer: 120, 90 and 120
  5. 5. Statistics Mean

    Find the mean of: 2, 20, 12

    Answer: 11.333333333333