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Cornerstone Oct 3 - 9 25 questions
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Monday 3 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 5⁄8

    Answer: 19⁄24
  2. 2. Algebra

    Solve: 4x - 13 = 11

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Divide 136 in the ratio 1:2:1

    Answer: 34, 68 and 34
  5. 5. Statistics

    Calculate the mean of: 23, 41, 39, 24, 9, 9, 24, 39

    Answer: 26

Tuesday 4 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 2x - 10 = 0

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Share 85 in the ratio 4:1

    Answer: 68 and 17
  5. 5. Statistics

    Find the mean of: 6, 20, 10

    Answer: 12

Wednesday 5 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄9 + 1⁄9

    Answer: 1⁄3
  2. 2. Algebra

    Solve: 4x + 5 = 25

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.56cm
  4. 4. Ratio

    Share 35 in the ratio 3:2

    Answer: 21 and 14
  5. 5. Statistics

    Calculate the mean of: 24, 45, 13, 8, 14, 38. Give your answer to 2 decimal places

    Answer: 23.67

Thursday 6 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 2⁄3

    Answer: 31⁄24
  2. 2. Algebra

    Solve: 2x + 4 = 22

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 70 in the ratio 4:3

    Answer: 40 and 30
  5. 5. Statistics

    Calculate the mean of: 15, 16, 38, 22, 31, 41, 20, 22. Give your answer to 2 decimal places

    Answer: 25.63

Friday 7 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 6x - 9 = 51

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.07cm
  4. 4. Ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics

    Find the mean of: 15, 13, 14, 2

    Answer: 11