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Cornerstone · Grades 3–5 Keystones #1 9 April 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 14 + 13

    Answer: 712
  2. 2. Algebra Two-step equations

    Solve: 6x + 15 = 45

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

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

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics Mean

    Find the mean of: 18, 10, 8

    Answer: 12