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Cornerstone · Grades 3–5 Keystones #1 12 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 12 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra Two-step equations

    Solve: 5x - 19 = 11

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 5cm

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 112 in the ratio 1:2:1

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

    Calculate the mean of: 12, 21, 15, 19, 33, 41, 47

    Answer: 26.9

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