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Cornerstone Aug 21 - 27 25 questions
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Monday 21 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x + 15 = 50

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio

    Divide 60 in the ratio 1:1:4

    Answer: 10, 10 and 40
  5. 5. Statistics

    Find the mean of: 4, 11, 9

    Answer: 8

Tuesday 22 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 5⁄6

    Answer: 37⁄30
  2. 2. Algebra

    Solve: 2x + 7 = 19

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 140 in the ratio 1:2:2

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

    Find the mean of: 4, 17, 3

    Answer: 8

Wednesday 23 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 8x - 19 = 85

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 8.6cm
  4. 4. Ratio

    Divide 170 in the ratio 2:2:1

    Answer: 68, 68 and 34
  5. 5. Statistics

    Calculate the mean of: 6, 8, 27, 10, 39, 50, 38. Give your answer to 2 decimal places

    Answer: 25.43

Thursday 24 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄8 + 4⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 6x - 16 = 20

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.04cm
  4. 4. Ratio

    Share 35 in the ratio 4:1

    Answer: 28 and 7
  5. 5. Statistics

    Find the mean of: 16, 18, 13, 8, 10

    Answer: 13

Friday 25 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 4x + 8 = 36

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics

    Calculate the mean of: 25, 47, 26, 22, 42, 33

    Answer: 32.5