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Cornerstone · Grades 3–5 Keystones #1 22 June 2021 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 June 2021 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄8 + 3⁄5

    Answer: 27⁄20
  2. 2. Algebra Two-step equations

    Solve: 5x - 8 = 67

    Answer: x = 15
  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 133 in the ratio 4:1:2

    Answer: 76, 19 and 38
  5. 5. Statistics Mean

    Find the mean of: 17, 11, 11, 18, 7

    Answer: 12.8

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