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Cornerstone · Grades 3–5 Keystones #1 3 December 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 3 December 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

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

    Solve: 6x - 6 = 48

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 308 in the ratio 3:4:4

    Answer: 84, 112 and 112
  5. 5. Statistics Mean

    Calculate the mean of: 6, 17, 43, 45, 50, 32

    Answer: 32.2

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