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Cornerstone · Grades 3–5 Keystones #1 10 July 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 July 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄4 + 6⁄8

    Answer: 3⁄2
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 48

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 176 in the ratio 3:1:4

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

    Find the mean of: 6, 18, 4, 20

    Answer: 12

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