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

Five GCSE retrieval questions · 1 April 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄5 + 2⁄4

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 16

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 196 in the ratio 1:2:4

    Answer: 28, 56 and 112
  5. 5. Statistics Mean

    Calculate the mean of: 49, 23, 33, 24, 27, 27, 31, 8

    Answer: 27.8

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