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Cornerstone · Grades 3–5 Keystones #1 24 December 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 24 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 45 + 36

    Answer: 1310
  2. 2. Algebra Two-step equations

    Solve: 8x - 20 = 76

    Answer: x = 12
  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

    Share 96 in the ratio 2:1

    Answer: 64 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 12, 26, 48, 37, 24, 30

    Answer: 29.5