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Cornerstone Dec 4 - 10 25 questions
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Monday 4 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x - 15 = -3

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 119 in the ratio 4:3

    Answer: 68 and 51
  5. 5. Statistics

    Find the mean of: 12, 3, 5, 2, 13

    Answer: 7

Tuesday 5 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 5⁄6

    Answer: 47⁄42
  2. 2. Algebra

    Solve: 5x + 15 = 65

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics

    Calculate the mean of: 8, 22, 6, 13, 46, 48, 35. Give your answer to 2 decimal places

    Answer: 25.43

Wednesday 6 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄8 + 1⁄8

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 7x + 11 = 67

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.2cm
  4. 4. Ratio

    Share 42 in the ratio 3:4

    Answer: 18 and 24
  5. 5. Statistics

    Calculate the mean of: 21, 6, 23, 50, 19, 36, 32, 28. Give your answer to 2 decimal places

    Answer: 26.88

Thursday 7 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 4⁄7

    Answer: 41⁄35
  2. 2. Algebra

    Solve: 5x - 14 = 11

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 60 in the ratio 2:3

    Answer: 24 and 36
  5. 5. Statistics

    Find the mean of: 17, 2, 5

    Answer: 8

Friday 8 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 3⁄5

    Answer: 41⁄35
  2. 2. Algebra

    Solve: 8x - 13 = 19

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Share 140 in the ratio 4:3

    Answer: 80 and 60
  5. 5. Statistics

    Find the mean of: 10, 11, 6, 9, 14

    Answer: 10