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Cornerstone Dec 25 - 31 25 questions
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Monday 25 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x + 14 = 36

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Share 66 in the ratio 1:2

    Answer: 22 and 44
  5. 5. Statistics

    Find the mean of: 19, 20, 19, 14, 3

    Answer: 15

Tuesday 26 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 5⁄8

    Answer: 31⁄24
  2. 2. Algebra

    Solve: 4x + 5 = 37

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio

    Share 51 in the ratio 2:1

    Answer: 34 and 17
  5. 5. Statistics

    Find the mean of: 20, 14, 14, 17, 10

    Answer: 15

Wednesday 27 December 2017

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 = 13
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 45 in the ratio 4:1

    Answer: 36 and 9
  5. 5. Statistics

    Calculate the mean of: 36, 6, 26, 7, 48, 46. Give your answer to 2 decimal places

    Answer: 28.17

Thursday 28 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 5⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 3x - 6 = 21

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics

    Calculate the mean of: 22, 19, 7, 23, 9, 38. Give your answer to 2 decimal places

    Answer: 19.67

Friday 29 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 6x + 4 = 70

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.3cm
  4. 4. Ratio

    Share 95 in the ratio 2:3

    Answer: 38 and 57
  5. 5. Statistics

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

    Answer: 8