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Cornerstone Jan 10 - 16 25 questions
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Monday 10 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 8x - 6 = 98

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 9.9cm
  4. 4. Ratio

    Divide 110 in the ratio 3:4:4

    Answer: 30, 40 and 40
  5. 5. Statistics

    Calculate the mean of: 15, 18, 39, 27, 37, 13, 22. Give your answer to 2 decimal places

    Answer: 24.43

Tuesday 11 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 3⁄4

    Answer: 13⁄8
  2. 2. Algebra

    Solve: 6x + 12 = 66

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 11.31cm
  4. 4. Ratio

    Divide 171 in the ratio 4:3:2

    Answer: 76, 57 and 38
  5. 5. Statistics

    Find the mean of: 10, 15, 13, 18

    Answer: 14

Wednesday 12 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄10 + 3⁄10

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 3x + 7 = 25

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 144 in the ratio 1:4:1

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

    Find the mean of: 13, 15, 10, 7, 15

    Answer: 12

Thursday 13 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 3x - 17 = 1

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio

    Divide 78 in the ratio 1:4:1

    Answer: 13, 52 and 13
  5. 5. Statistics

    Calculate the mean of: 29, 22, 7, 28, 27, 44, 50. Give your answer to 2 decimal places

    Answer: 29.57

Friday 14 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 4⁄5

    Answer: 21⁄20
  2. 2. Algebra

    Solve: 2x - 7 = 23

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics

    Find the mean of: 23, 3, 10

    Answer: 12