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Cornerstone · Grades 3–5 Keystones #1 30 March 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 30 March 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 4⁄6

    Answer: 25⁄24
  2. 2. Algebra Two-step equations

    Solve: 4x - 20 = -4

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 12.73cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 4:1

    Answer: 52 and 13
  5. 5. Statistics Mean

    Find the mean of: 11, 4, 6, 6

    Answer: 6.75

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