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

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

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 36

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 4cm

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 154 in the ratio 3:3:1

    Answer: 66, 66 and 22
  5. 5. Statistics Mean

    Find the mean of: 9, 13, 18, 2

    Answer: 10.5

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