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Cornerstone · Grades 3–5 Keystones #1 17 March 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 March 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 3⁄8

    Answer: 29⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x - 18 = 10

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 9cm

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 136 in the ratio 3:2:3

    Answer: 51, 34 and 51
  5. 5. Statistics Mean

    Find the mean of: 13, 16, 2, 4, 19

    Answer: 10.8

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