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Cornerstone Sep 4 - 10 25 questions
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Monday 4 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 3⁄5

    Answer: 11⁄10
  2. 2. Algebra

    Solve: 7x + 12 = 33

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio

    Divide 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics

    Calculate the mean of: 19, 37, 41, 35, 9, 22, 21, 22

    Answer: 25.75

Tuesday 5 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 3⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x - 13 = -1

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 60 in the ratio 1:1:3

    Answer: 12, 12 and 36
  5. 5. Statistics

    Find the mean of: 17, 9, 16

    Answer: 14

Wednesday 6 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄8 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 7x - 12 = 79

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 9.85cm
  4. 4. Ratio

    Divide 225 in the ratio 1:4:4

    Answer: 25, 100 and 100
  5. 5. Statistics

    Find the mean of: 9, 17, 13

    Answer: 13

Thursday 7 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 6x + 13 = 61

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio

    Divide 70 in the ratio 3:1:3

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

    Calculate the mean of: 19, 7, 34, 39, 49, 35

    Answer: 30.5

Friday 8 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x + 11 = 23

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 84 in the ratio 1:3:3

    Answer: 12, 36 and 36
  5. 5. Statistics

    Calculate the mean of: 27, 8, 5, 42, 37, 25, 38

    Answer: 26