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Cornerstone · Grades 3–5 Keystones #1 31 January 2022 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 January 2022 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 4⁄5

    Answer: 17⁄15
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 45

    Answer: x = 8
  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

    Divide 136 in the ratio 3:3:2

    Answer: 51, 51 and 34
  5. 5. Statistics Mean

    Find the mean of: 18, 4, 2, 9

    Answer: 8.25

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