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Cornerstone · Grades 3–5 Keystones #1 6 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄6 + 2⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x - 15 = -3

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

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 2:3

    Answer: 32 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 29, 25, 39, 35, 37, 18

    Answer: 30.5

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