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Lintel Sep 19 - 25 25 questions
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Monday 19 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000035 in standard form

    Answer: 3.5 × 10-5
  2. 2. Algebra

    Factorise: x² - 14x + 49

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

    Adjacent = 20cm, angle = 54°. Find opposite. Give your answer to 2 decimal places

    Answer: 27.53cm
  4. 4. Ratio

    Orange and purple beads are in the ratio 11:2. What fraction of the beads are orange?

    Answer: 11⁄13
  5. 5. Statistics

    Calculate the mean of: 5, 16, 8, 12, 27, 47, 45. Give your answer to 2 decimal places

    Answer: 22.86

Tuesday 20 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 72,000,000 in standard form

    Answer: 7.2 × 107
  2. 2. Algebra

    Factorise: x² - 12x + 11

    Answer: (x - 1)(x - 11)
  3. 3. Geometry

    Hypotenuse = 23cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 13.84cm
  4. 4. Ratio

    Red and blue marbles are in the ratio 15:14. What fraction of the marbles are blue?

    Answer: 14⁄29
  5. 5. Statistics

    The mean of 4 numbers is 35. If 3 of them are 23, 44, 37, what is the missing number?

    Answer: 36

Wednesday 21 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.08 in standard form

    Answer: 8 × 10-2
  2. 2. Algebra

    Factorise: x² - 2x - 24

    Answer: (x + 4)(x - 6)
  3. 3. Geometry

    Adjacent = 14cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 20.76cm
  4. 4. Ratio

    Divide 203 in the ratio 2:1:4

    Answer: 58, 29 and 116
  5. 5. Statistics

    Calculate the mean of: 29, 9, 35, 31, 25, 48, 16, 14. Give your answer to 2 decimal places

    Answer: 25.88

Thursday 22 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 2,300,000 in standard form

    Answer: 2.3 × 106
  2. 2. Algebra

    Factorise: x² - 2x - 8

    Answer: (x + 2)(x - 4)
  3. 3. Geometry

    Hypotenuse = 29cm, angle = 30°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 25.11cm
  4. 4. Ratio

    Express the second part of 3:13 as a fraction in simplest form

    Answer: 13⁄16
  5. 5. Statistics

    Calculate the mean of: 26, 10, 48, 20, 20, 6, 32, 43. Give your answer to 2 decimal places

    Answer: 25.63

Friday 23 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.061 in standard form

    Answer: 6.1 × 10-2
  2. 2. Algebra

    Factorise: x² + x - 2

    Answer: (x + 2)(x - 1)
  3. 3. Geometry

    Adjacent = 29cm, angle = 41°. Find opposite. Give your answer to 2 decimal places

    Answer: 25.21cm
  4. 4. Ratio

    Express the first part of 3:6 as a fraction in simplest form

    Answer: 1⁄3
  5. 5. Statistics

    The mean of 5 numbers is 25. If 4 of them are 36, 16, 17, 27, what is the missing number?

    Answer: 29