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Cornerstone · Grades 3–5 Keystones #1 31 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 3⁄6

    Answer: 9⁄14
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 42

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

    Calculate the hypotenuse when a = 9cm and b = 14cm

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Divide 234 in the ratio 1:4:4

    Answer: 26, 104 and 104
  5. 5. Statistics Mean

    Calculate the mean of: 29, 22, 50, 48, 47, 15

    Answer: 35.2

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