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Cornerstone · Grades 3–5 Keystones #1 28 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 35 + 67

    Answer: 5135
  2. 2. Algebra Two-step equations

    Solve: 7x - 13 = 43

    Answer: x = 8
  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

    Divide 85 in the ratio 2:2:1

    Answer: 34, 34 and 17
  5. 5. Statistics Mean

    Find the mean of: 5, 8, 17, 20

    Answer: 12.5