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Lintel Aug 29 - Sep 4 25 questions
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Monday 29 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00079 in standard form

    Answer: 7.9 × 10-4
  2. 2. Algebra

    Factorise: x² + 7x - 8

    Answer: (x + 8)(x - 1)
  3. 3. Geometry

    Adjacent = 11cm, angle = 44°. Find opposite. Give your answer to 2 decimal places

    Answer: 10.62cm
  4. 4. Ratio

    Simplify: 12:16:20

    Answer: 3:4:5
  5. 5. Statistics

    The mean of 4 numbers is 36. If 3 of them are 25, 48, 20, what is the missing number?

    Answer: 51

Tuesday 30 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.075 in standard form

    Answer: 7.5 × 10-2
  2. 2. Algebra

    Factorise: x² + 8x + 16

    Answer: (x + 4)(x + 4)
  3. 3. Geometry

    Hypotenuse = 27cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 22.12cm
  4. 4. Ratio

    Simplify: 6:10:10

    Answer: 3:5:5
  5. 5. Statistics

    The mean of 4 numbers is 40. If 3 of them are 46, 47, 20, what is the missing number?

    Answer: 47

Wednesday 31 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 48,000 in standard form

    Answer: 4.8 × 104
  2. 2. Algebra

    Factorise: x² + 4x - 32

    Answer: (x + 8)(x - 4)
  3. 3. Geometry

    Adjacent = 14cm, angle = 46°. Find opposite. Give your answer to 2 decimal places

    Answer: 14.5cm
  4. 4. Ratio

    Divide 119 in the ratio 4:1:2

    Answer: 68, 17 and 34
  5. 5. Statistics

    Calculate the mean of: 23, 12, 21, 23, 50, 39, 34. Give your answer to 2 decimal places

    Answer: 28.86

Thursday 1 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 280,000 in standard form

    Answer: 2.8 × 105
  2. 2. Algebra

    Factorise: x² - 6x - 16

    Answer: (x + 2)(x - 8)
  3. 3. Geometry

    Adjacent = 12cm, angle = 48°. Find opposite. Give your answer to 2 decimal places

    Answer: 13.33cm
  4. 4. Ratio

    Express the first part of 10:6 as a fraction in simplest form

    Answer: 5⁄8
  5. 5. Statistics

    The mean of 5 numbers is 32. If 4 of them are 38, 27, 26, 25, what is the missing number?

    Answer: 44

Friday 2 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.047 in standard form

    Answer: 4.7 × 10-2
  2. 2. Algebra

    Factorise: x² - 2x - 48

    Answer: (x + 6)(x - 8)
  3. 3. Geometry

    Hypotenuse = 23cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 10.8cm
  4. 4. Ratio

    Orange and purple marbles are in the ratio 6:14. What fraction of the marbles are orange?

    Answer: 3⁄10
  5. 5. Statistics

    The mean of 5 numbers is 36. If 4 of them are 47, 22, 28, 23, what is the missing number?

    Answer: 60