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Cornerstone · Grades 3–5 Keystones #1 8 March 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 48

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 52 in the ratio 1:1:2

    Answer: 13, 13 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 19, 39, 32, 17, 27, 28, 39, 36

    Answer: 29.6

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