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

Five GCSE retrieval questions · 3 September 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 3⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 34

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

    Calculate the hypotenuse when a = 4cm and b = 14cm

    Answer: 14.56cm
  4. 4. Ratio Sharing in a ratio

    Divide 210 in the ratio 2:1:2

    Answer: 84, 42 and 84
  5. 5. Statistics Mean

    Find the mean of: 20, 16, 15

    Answer: 17

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