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

Five GCSE retrieval questions · 5 April 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 4⁄6

    Answer: 13⁄15
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 18

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

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 3:1:2

    Answer: 72, 24 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 40, 34, 15, 42, 31, 26, 10, 29

    Answer: 28.4

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