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Lintel Dec 27 - Jan 2 25 questions
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Monday 27 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 13,000 in standard form

    Answer: 1.3 × 104
  2. 2. Algebra

    Factorise: x² - 3x - 10

    Answer: (x + 2)(x - 5)
  3. 3. Geometry

    Hypotenuse = 29cm, angle = 32°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 24.59cm
  4. 4. Ratio

    Divide 280 in the ratio 3:4:3

    Answer: 84, 112 and 84
  5. 5. Statistics

    The mean of 5 numbers is 36. If 4 of them are 39, 46, 42, 20, what is the missing number?

    Answer: 33

Tuesday 28 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 930,000,000 in standard form

    Answer: 9.3 × 108
  2. 2. Algebra

    Factorise: x² - 9x - 10

    Answer: (x + 1)(x - 10)
  3. 3. Geometry

    Hypotenuse = 33cm, angle = 31°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 28.29cm
  4. 4. Ratio

    Divide 126 in the ratio 2:4:3

    Answer: 28, 56 and 42
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 47, 50, 40, 23, what is the missing number?

    Answer: 30

Wednesday 29 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00063 in standard form

    Answer: 6.3 × 10-4
  2. 2. Algebra

    Factorise: x² - 5x + 4

    Answer: (x - 1)(x - 4)
  3. 3. Geometry

    Adjacent = 28cm, angle = 42°. Find opposite. Give your answer to 2 decimal places

    Answer: 25.21cm
  4. 4. Ratio

    Black and white beads are in the ratio 11:12. What fraction of the beads are white?

    Answer: 12⁄23
  5. 5. Statistics

    Calculate the mean of: 7, 23, 49, 50, 10, 9. Give your answer to 2 decimal places

    Answer: 24.67

Thursday 30 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0029 in standard form

    Answer: 2.9 × 10-3
  2. 2. Algebra

    Factorise: x² + 8x + 12

    Answer: (x + 6)(x + 2)
  3. 3. Geometry

    Hypotenuse = 24cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.27cm
  4. 4. Ratio

    Simplify: 12:6:15

    Answer: 4:2:5
  5. 5. Statistics

    Calculate the mean of: 43, 14, 7, 8, 31, 41, 37. Give your answer to 2 decimal places

    Answer: 25.86

Friday 31 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 730,000 in standard form

    Answer: 7.3 × 105
  2. 2. Algebra

    Factorise: x² - 5x - 14

    Answer: (x + 2)(x - 7)
  3. 3. Geometry

    Adjacent = 12cm, angle = 33°. Find opposite. Give your answer to 2 decimal places

    Answer: 7.79cm
  4. 4. Ratio

    Divide 52 in the ratio 2:1:1

    Answer: 26, 13 and 13
  5. 5. Statistics

    The mean of 6 numbers is 36. If 5 of them are 42, 45, 27, 43, 23, what is the missing number?

    Answer: 36