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Cornerstone Jul 21 - 27 25 questions
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Monday 21 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 2⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x + 3 = 43

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 25 in the ratio 2:3

    Answer: 10 and 15
  5. 5. Statistics

    Calculate the mean of: 17, 31, 28, 23, 29, 16, 27. Give your answer to 2 decimal places

    Answer: 24.43

Tuesday 22 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 4⁄6

    Answer: 22⁄15
  2. 2. Algebra

    Solve: 6x + 11 = 77

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio

    Share 91 in the ratio 3:4

    Answer: 39 and 52
  5. 5. Statistics

    Calculate the mean of: 14, 40, 30, 12, 13, 8, 40. Give your answer to 2 decimal places

    Answer: 22.43

Wednesday 23 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄12 + 1⁄12

    Answer: 1⁄6
  2. 2. Algebra

    Solve: 4x - 18 = 22

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Share 45 in the ratio 2:3

    Answer: 18 and 27
  5. 5. Statistics

    Find the mean of: 15, 2, 22

    Answer: 13

Thursday 24 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄11 + 3⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 3x - 15 = 21

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 8.49cm
  4. 4. Ratio

    Divide 192 in the ratio 1:3:4

    Answer: 24, 72 and 96
  5. 5. Statistics

    Calculate the mean of: 34, 45, 32, 44, 47, 44, 41, 34. Give your answer to 2 decimal places

    Answer: 40.13

Friday 25 July 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 5⁄6

    Answer: 31⁄30
  2. 2. Algebra

    Solve: 2x + 10 = 24

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.76cm
  4. 4. Ratio

    Divide 252 in the ratio 2:4:3

    Answer: 56, 112 and 84
  5. 5. Statistics

    Find the mean of: 4, 17, 3, 20

    Answer: 11