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Cornerstone Mar 21 - 27 25 questions
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Monday 21 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 6⁄8

    Answer: 5⁄4
  2. 2. Algebra

    Solve: 2x + 8 = 18

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics

    Calculate the mean of: 29, 41, 44, 50, 33, 13

    Answer: 35

Tuesday 22 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x + 6 = 48

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics

    Calculate the mean of: 16, 43, 23, 29, 25, 31, 44, 28. Give your answer to 2 decimal places

    Answer: 29.88

Wednesday 23 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 3⁄5

    Answer: 49⁄40
  2. 2. Algebra

    Solve: 6x - 7 = 65

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 84 in the ratio 2:1

    Answer: 56 and 28
  5. 5. Statistics

    Find the mean of: 5, 2, 14

    Answer: 7

Thursday 24 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 2⁄3

    Answer: 3⁄2
  2. 2. Algebra

    Solve: 5x - 18 = 32

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 128 in the ratio 3:4:1

    Answer: 48, 64 and 16
  5. 5. Statistics

    Calculate the mean of: 12, 47, 40, 40, 12, 42, 18. Give your answer to 2 decimal places

    Answer: 30.14

Friday 25 March 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 2⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x + 12 = 36

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio

    Divide 168 in the ratio 1:1:4

    Answer: 28, 28 and 112
  5. 5. Statistics

    Find the mean of: 22, 16, 10, 12

    Answer: 15