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Cornerstone · Grades 3–5 Keystones #1 17 December 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 17 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 4⁄9

    Answer: 5⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 52

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

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 240 in the ratio 4:3:1

    Answer: 120, 90 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 22, 20, 31, 44, 47, 43, 33, 14

    Answer: 31.8

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