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Cornerstone Oct 20 - 26 25 questions
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Monday 20 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 2⁄7

    Answer: 29⁄28
  2. 2. Algebra

    Solve: 5x + 4 = 34

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics

    Calculate the mean of: 26, 47, 12, 46, 18, 5, 25, 14. Give your answer to 2 decimal places

    Answer: 24.13

Tuesday 21 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄10 + 3⁄10

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 5x - 16 = 54

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio

    Share 57 in the ratio 1:2

    Answer: 19 and 38
  5. 5. Statistics

    Find the mean of: 14, 13, 2, 4, 7

    Answer: 8

Wednesday 22 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 1⁄8

    Answer: 23⁄56
  2. 2. Algebra

    Solve: 3x - 12 = 6

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 55 in the ratio 1:4

    Answer: 11 and 44
  5. 5. Statistics

    Find the mean of: 10, 4, 20, 14

    Answer: 12

Thursday 23 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 4x + 7 = 31

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio

    Share 42 in the ratio 1:2

    Answer: 14 and 28
  5. 5. Statistics

    Calculate the mean of: 14, 25, 37, 33, 22, 43, 11. Give your answer to 2 decimal places

    Answer: 26.43

Friday 24 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 1⁄7

    Answer: 3⁄7
  2. 2. Algebra

    Solve: 6x + 7 = 67

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio

    Divide 135 in the ratio 2:2:1

    Answer: 54, 54 and 27
  5. 5. Statistics

    Find the mean of: 4, 25, 8, 15

    Answer: 13