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Cornerstone Jan 18 - 24 25 questions
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Monday 18 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 1⁄10

    Answer: 3⁄10
  2. 2. Algebra

    Solve: 7x + 7 = 91

    Answer: x = 12
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Share 60 in the ratio 4:1

    Answer: 48 and 12
  5. 5. Statistics

    Find the mean of: 13, 18, 11

    Answer: 14

Tuesday 19 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 6⁄7

    Answer: 19⁄14
  2. 2. Algebra

    Solve: 8x - 11 = 53

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.23cm
  4. 4. Ratio

    Share 77 in the ratio 4:3

    Answer: 44 and 33
  5. 5. Statistics

    Calculate the mean of: 13, 6, 37, 35, 21, 50, 37. Give your answer to 2 decimal places

    Answer: 28.43

Wednesday 20 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 2x - 12 = 4

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Share 75 in the ratio 2:3

    Answer: 30 and 45
  5. 5. Statistics

    Find the mean of: 18, 8, 13

    Answer: 13

Thursday 21 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 5⁄6

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 5x + 4 = 34

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics

    Calculate the mean of: 8, 30, 21, 17, 44, 22. Give your answer to 2 decimal places

    Answer: 23.67

Friday 22 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄9 + 5⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 6x + 5 = 29

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Share 119 in the ratio 3:4

    Answer: 51 and 68
  5. 5. Statistics

    Calculate the mean of: 42, 36, 10, 38, 45, 31. Give your answer to 2 decimal places

    Answer: 33.67