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Lintel Dec 15 - 21 25 questions
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Monday 15 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000023 in standard form

    Answer: 2.3 × 10-5
  2. 2. Algebra

    Factorise: x² + 17x + 66

    Answer: (x + 11)(x + 6)
  3. 3. Geometry

    Adjacent = 10cm, angle = 55°. Find opposite. Give your answer to 2 decimal places

    Answer: 14.28cm
  4. 4. Ratio

    Divide 207 in the ratio 1:4:4

    Answer: 23, 92 and 92
  5. 5. Statistics

    Calculate the mean of: 43, 33, 35, 39, 21, 41, 25. Give your answer to 2 decimal places

    Answer: 33.86

Tuesday 16 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 750,000 in standard form

    Answer: 7.5 × 105
  2. 2. Algebra

    Factorise: x² + 14x + 33

    Answer: (x + 11)(x + 3)
  3. 3. Geometry

    Hypotenuse = 24cm, angle = 64°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 10.52cm
  4. 4. Ratio

    Divide 210 in the ratio 2:1:4

    Answer: 60, 30 and 120
  5. 5. Statistics

    Calculate the mean of: 36, 50, 31, 16, 41, 28, 32, 19. Give your answer to 2 decimal places

    Answer: 31.63

Wednesday 17 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.041 in standard form

    Answer: 4.1 × 10-2
  2. 2. Algebra

    Factorise: x² + 7x - 30

    Answer: (x + 10)(x - 3)
  3. 3. Geometry

    Adjacent = 15cm, angle = 39°. Find opposite. Give your answer to 2 decimal places

    Answer: 12.15cm
  4. 4. Ratio

    Simplify: 15:6:6

    Answer: 5:2:2
  5. 5. Statistics

    The mean of 4 numbers is 31. If 3 of them are 15, 21, 50, what is the missing number?

    Answer: 38

Thursday 18 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.067 in standard form

    Answer: 6.7 × 10-2
  2. 2. Algebra

    Factorise: x² + 3x - 54

    Answer: (x + 9)(x - 6)
  3. 3. Geometry

    Adjacent = 20cm, angle = 34°. Find opposite. Give your answer to 2 decimal places

    Answer: 13.49cm
  4. 4. Ratio

    Express the first part of 2:9 as a fraction in simplest form

    Answer: 2⁄11
  5. 5. Statistics

    The mean of 6 numbers is 29. If 5 of them are 37, 30, 23, 18, 30, what is the missing number?

    Answer: 36

Friday 19 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 87,000 in standard form

    Answer: 8.7 × 104
  2. 2. Algebra

    Factorise: x² + 14x + 49

    Answer: (x + 7)(x + 7)
  3. 3. Geometry

    Hypotenuse = 27cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 14.71cm
  4. 4. Ratio

    Simplify: 8:4:12

    Answer: 2:1:3
  5. 5. Statistics

    Calculate the mean of: 30, 28, 44, 5, 38, 42, 8. Give your answer to 2 decimal places

    Answer: 27.86