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Cornerstone Oct 6 - 12 25 questions
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Monday 6 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 1⁄3

    Answer: 16⁄21
  2. 2. Algebra

    Solve: 8x - 6 = 114

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.69cm
  4. 4. Ratio

    Divide 78 in the ratio 4:1:1

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

    Find the mean of: 9, 12, 13, 14

    Answer: 12

Tuesday 7 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 6x + 15 = 63

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Divide 126 in the ratio 4:3:2

    Answer: 56, 42 and 28
  5. 5. Statistics

    Calculate the mean of: 11, 17, 50, 37, 18, 39, 36, 17. Give your answer to 2 decimal places

    Answer: 28.13

Wednesday 8 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 2⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 3x + 12 = 21

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 216 in the ratio 2:4:3

    Answer: 48, 96 and 72
  5. 5. Statistics

    Calculate the mean of: 29, 26, 27, 27, 22, 8. Give your answer to 2 decimal places

    Answer: 23.17

Thursday 9 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 3⁄7

    Answer: 43⁄35
  2. 2. Algebra

    Solve: 3x - 8 = 31

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 12.65cm
  4. 4. Ratio

    Divide 198 in the ratio 3:4:4

    Answer: 54, 72 and 72
  5. 5. Statistics

    Find the mean of: 4, 5, 15, 22, 14

    Answer: 12

Friday 10 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 4⁄5

    Answer: 13⁄10
  2. 2. Algebra

    Solve: 6x - 12 = 18

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 168 in the ratio 3:4:1

    Answer: 63, 84 and 21
  5. 5. Statistics

    Find the mean of: 8, 20, 4, 12

    Answer: 11