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Cornerstone · Grades 3–5 Keystones #1 20 February 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 February 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 4x - 11 = 37

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 10cm

    Answer: 14.14cm
  4. 4. Ratio Sharing in a ratio

    Share 76 in the ratio 1:3

    Answer: 19 and 57
  5. 5. Statistics Mean

    Find the mean of: 4, 8, 6

    Answer: 6

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