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Cornerstone Oct 23 - 29 25 questions
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Monday 23 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 4⁄6

    Answer: 37⁄24
  2. 2. Algebra

    Solve: 3x + 10 = 43

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 133 in the ratio 3:1:3

    Answer: 57, 19 and 57
  5. 5. Statistics

    Find the mean of: 10, 10, 4

    Answer: 8

Tuesday 24 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 4⁄5

    Answer: 21⁄20
  2. 2. Algebra

    Solve: 7x + 15 = 43

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 56 in the ratio 3:4

    Answer: 24 and 32
  5. 5. Statistics

    Calculate the mean of: 22, 24, 20, 36, 46, 13, 22, 7

    Answer: 23.75

Wednesday 25 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x - 7 = 38

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.73cm
  4. 4. Ratio

    Share 49 in the ratio 4:3

    Answer: 28 and 21
  5. 5. Statistics

    Find the mean of: 19, 25, 2, 10

    Answer: 14

Thursday 26 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 5⁄6

    Answer: 47⁄42
  2. 2. Algebra

    Solve: 7x - 18 = 24

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 50 in the ratio 3:2

    Answer: 30 and 20
  5. 5. Statistics

    Find the mean of: 6, 14, 9, 7

    Answer: 9

Friday 27 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x + 6 = 56

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio

    Share 70 in the ratio 3:2

    Answer: 42 and 28
  5. 5. Statistics

    Calculate the mean of: 48, 34, 29, 31, 19, 17, 37. Give your answer to 2 decimal places

    Answer: 30.71