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Lintel Sep 17 - 23 25 questions
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Monday 17 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0088 in standard form

    Answer: 8.8 × 10-3
  2. 2. Algebra

    Factorise: x² - 5x - 6

    Answer: (x + 1)(x - 6)
  3. 3. Geometry

    Adjacent = 25cm, angle = 41°. Find opposite. Give your answer to 2 decimal places

    Answer: 21.73cm
  4. 4. Ratio

    In ratio 7:9:5, what fraction is the first part?

    Answer: 1⁄3
  5. 5. Statistics

    Calculate the mean of: 29, 43, 33, 46, 41, 49, 38. Give your answer to 2 decimal places

    Answer: 39.86

Tuesday 18 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00096 in standard form

    Answer: 9.6 × 10-4
  2. 2. Algebra

    Factorise: x² - 4x - 21

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

    Adjacent = 30cm, angle = 51°. Find opposite. Give your answer to 2 decimal places

    Answer: 37.05cm
  4. 4. Ratio

    £308.00 is shared between A and B in the ratio 2:5. How much does A receive?

    Answer: £88.00
  5. 5. Statistics

    Calculate the mean of: 35, 36, 39, 37, 19, 23, 38. Give your answer to 2 decimal places

    Answer: 32.43

Wednesday 19 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 46,000,000 in standard form

    Answer: 4.6 × 107
  2. 2. Algebra

    Factorise: x² + 16x + 63

    Answer: (x + 9)(x + 7)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 31.13cm
  4. 4. Ratio

    Simplify the ratio 6kg : 800g

    Answer: 15:2
  5. 5. Statistics

    The mean of 4 numbers is 30. If 3 of them are 32, 38, 45, what is the missing number?

    Answer: 5

Thursday 20 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.015 in standard form

    Answer: 1.5 × 10-2
  2. 2. Algebra

    Factorise: x² - 2x + 1

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

    Adjacent = 17cm, angle = 36°. Find opposite. Give your answer to 2 decimal places

    Answer: 12.35cm
  4. 4. Ratio

    Orange, purple and pink beads are in the ratio 2:12:4. What fraction of the beads are purple?

    Answer: 2⁄3
  5. 5. Statistics

    Calculate the mean of: 46, 16, 45, 47, 33, 46, 18, 6. Give your answer to 2 decimal places

    Answer: 32.13

Friday 21 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 6,300,000 in standard form

    Answer: 6.3 × 106
  2. 2. Algebra

    Factorise: x² - x - 56

    Answer: (x + 7)(x - 8)
  3. 3. Geometry

    Hypotenuse = 25cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 13.62cm
  4. 4. Ratio

    Black, white and yellow beads are in the ratio 1:7:7. What fraction of the beads are yellow?

    Answer: 7⁄15
  5. 5. Statistics

    The mean of 6 numbers is 34. If 5 of them are 25, 44, 22, 34, 23, what is the missing number?

    Answer: 56