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Cornerstone Oct 2 - 8 25 questions
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Monday 2 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 3⁄4

    Answer: 37⁄28
  2. 2. Algebra

    Solve: 5x - 17 = 53

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 10.63cm
  4. 4. Ratio

    Divide 152 in the ratio 3:3:2

    Answer: 57, 57 and 38
  5. 5. Statistics

    Find the mean of: 20, 6, 4

    Answer: 10

Tuesday 3 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 6x + 5 = 71

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Divide 80 in the ratio 1:1:2

    Answer: 20, 20 and 40
  5. 5. Statistics

    Calculate the mean of: 38, 18, 29, 46, 30, 45, 33. Give your answer to 2 decimal places

    Answer: 34.14

Wednesday 4 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 3⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 2x + 7 = 29

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics

    Find the mean of: 8, 14, 2, 20

    Answer: 11

Thursday 5 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 1⁄6

    Answer: 43⁄42
  2. 2. Algebra

    Solve: 4x - 10 = 30

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio

    Share 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics

    Calculate the mean of: 39, 16, 45, 42, 7, 40

    Answer: 31.5

Friday 6 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 2⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 6x - 11 = 73

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio

    Share 32 in the ratio 3:1

    Answer: 24 and 8
  5. 5. Statistics

    Calculate the mean of: 44, 23, 32, 12, 38, 34, 28. Give your answer to 2 decimal places

    Answer: 30.14