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Cornerstone · Grades 3–5 Keystones #1 28 August 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 August 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 2⁄4

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 9 = 6

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

    Calculate the hypotenuse when a = 5cm and b = 7cm

    Answer: 8.6cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 3:2:3

    Answer: 78, 52 and 78
  5. 5. Statistics Mean

    Find the mean of: 19, 10, 2, 19, 11

    Answer: 12.2

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