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Cornerstone · Grades 3–5 Keystones #1 11 December 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 December 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄5 + 2⁄4

    Answer: 11⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x - 19 = 25

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Share 28 in the ratio 3:1

    Answer: 21 and 7
  5. 5. Statistics Mean

    Calculate the mean of: 5, 5, 22, 35, 6, 38, 15

    Answer: 18

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