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Cornerstone · Grades 3–5 Keystones #1 13 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 13 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄8 + 2⁄8

    Answer: 1⁄2
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 42

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 8cm

    Answer: 12.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 203 in the ratio 4:2:1

    Answer: 116, 58 and 29
  5. 5. Statistics Mean

    Find the mean of: 3, 4, 9, 6

    Answer: 5.5

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