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Cornerstone · Grades 3–5 Keystones #1 1 November 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 November 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄5 + 2⁄4

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 45

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

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 4:3:1

    Answer: 88, 66 and 22
  5. 5. Statistics Mean

    Find the mean of: 2, 16, 2

    Answer: 6.6666666666667

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