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Cornerstone Apr 2 - 8 25 questions
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Monday 2 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 5⁄8

    Answer: 23⁄24
  2. 2. Algebra

    Solve: 2x - 13 = 7

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 70 in the ratio 3:3:1

    Answer: 30, 30 and 10
  5. 5. Statistics

    Find the mean of: 6, 11, 13, 6

    Answer: 9

Tuesday 3 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄10 + 4⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x + 14 = 56

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio

    Divide 144 in the ratio 2:4:3

    Answer: 32, 64 and 48
  5. 5. Statistics

    Calculate the mean of: 47, 49, 33, 31, 32, 30, 25, 17

    Answer: 33

Wednesday 4 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 2⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 7x + 4 = 67

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio

    Share 44 in the ratio 3:1

    Answer: 33 and 11
  5. 5. Statistics

    Find the mean of: 17, 7, 9

    Answer: 11

Thursday 5 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄7

    Answer: 20⁄21
  2. 2. Algebra

    Solve: 8x - 6 = 66

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 50 in the ratio 2:3

    Answer: 20 and 30
  5. 5. Statistics

    Calculate the mean of: 49, 30, 13, 20, 46, 7, 6. Give your answer to 2 decimal places

    Answer: 24.43

Friday 6 April 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 8x - 6 = 50

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 15.56cm
  4. 4. Ratio

    Share 50 in the ratio 1:4

    Answer: 10 and 40
  5. 5. Statistics

    Calculate the mean of: 16, 48, 14, 29, 22, 23. Give your answer to 2 decimal places

    Answer: 25.33