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Cornerstone · Grades 3–5 Keystones #1 3 February 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 3 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄5 + 1⁄5

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

    Solve: 8x - 14 = 98

    Answer: x = 14
  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 132 in the ratio 1:4:1

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

    Calculate the mean of: 8, 19, 18, 47, 44, 12. Give your answer to 2 decimal places

    Answer: 24.67

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