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

Five GCSE retrieval questions · 3 March 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 1⁄5

    Answer: 9⁄20
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 63

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 14cm

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Share 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics Mean

    Find the mean of: 8, 5, 2, 20, 4

    Answer: 7.8

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