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Cornerstone · Grades 3–5 Keystones #1 8 March 2019 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 March 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 73

    Answer: x = 10
  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 90 in the ratio 1:1:3

    Answer: 18, 18 and 54
  5. 5. Statistics Mean

    Find the mean of: 12, 6, 2, 12, 14

    Answer: 9.2

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