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Cornerstone Jul 31 - Aug 6 25 questions
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Monday 31 July 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 4⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 7x - 12 = 58

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio

    Share 112 in the ratio 3:4

    Answer: 48 and 64
  5. 5. Statistics

    Find the mean of: 16, 8, 13, 5, 18

    Answer: 12

Tuesday 1 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 4⁄8

    Answer: 13⁄10
  2. 2. Algebra

    Solve: 4x + 12 = 24

    Answer: x = 3
  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

    Divide 75 in the ratio 1:2:2

    Answer: 15, 30 and 30
  5. 5. Statistics

    Calculate the mean of: 45, 43, 47, 38, 36, 17. Give your answer to 2 decimal places

    Answer: 37.67

Wednesday 2 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x + 15 = 36

    Answer: x = 3
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Divide 88 in the ratio 2:1:1

    Answer: 44, 22 and 22
  5. 5. Statistics

    Calculate the mean of: 45, 15, 37, 38, 13, 35

    Answer: 30.5

Thursday 3 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 5⁄7

    Answer: 22⁄21
  2. 2. Algebra

    Solve: 8x - 15 = 89

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.03cm
  4. 4. Ratio

    Divide 136 in the ratio 2:1:1

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

    Find the mean of: 12, 9, 6

    Answer: 9

Friday 4 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 3⁄6

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 3x - 15 = 0

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 24 in the ratio 2:1

    Answer: 16 and 8
  5. 5. Statistics

    Calculate the mean of: 22, 31, 32, 40, 17, 21. Give your answer to 2 decimal places

    Answer: 27.17