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

Five GCSE retrieval questions · 1 September 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 7⁄8

    Answer: 65⁄56
  2. 2. Algebra Two-step equations

    Solve: 2x - 15 = 3

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 4:1

    Answer: 72 and 18
  5. 5. Statistics Mean

    Find the mean of: 2, 9, 9, 20, 20

    Answer: 12

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