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Cornerstone · Grades 3–5 Keystones #1 22 March 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

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

    Solve: 4x - 18 = 2

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

    Calculate the hypotenuse when a = 11cm and b = 15cm

    Answer: 18.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 3:4:4

    Answer: 48, 64 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 50, 14, 13, 22, 7, 30, 30

    Answer: 23.7

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