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Lintel Aug 8 - 14 25 questions
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Monday 8 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.017 in standard form

    Answer: 1.7 × 10-2
  2. 2. Algebra

    Factorise: x² - x - 20

    Answer: (x + 4)(x - 5)
  3. 3. Geometry

    Hypotenuse = 29cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.79cm
  4. 4. Ratio

    Orange and purple sweets are in the ratio 13:9. What fraction of the sweets are orange?

    Answer: 13⁄22
  5. 5. Statistics

    The mean of 6 numbers is 40. If 5 of them are 50, 18, 35, 21, 46, what is the missing number?

    Answer: 70

Tuesday 9 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 38,000,000 in standard form

    Answer: 3.8 × 107
  2. 2. Algebra

    Factorise: x² - 4x + 3

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

    Adjacent = 27cm, angle = 37°. Find opposite. Give your answer to 2 decimal places

    Answer: 20.35cm
  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: 8, 21, 7, 26, 9, 11. Give your answer to 2 decimal places

    Answer: 13.67

Wednesday 10 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 7,100,000 in standard form

    Answer: 7.1 × 106
  2. 2. Algebra

    Factorise: x² - 17x + 72

    Answer: (x - 8)(x - 9)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 49°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 24.93cm
  4. 4. Ratio

    Orange and purple marbles are in the ratio 13:9. What fraction of the marbles are orange?

    Answer: 13⁄22
  5. 5. Statistics

    Calculate the mean of: 5, 46, 10, 19, 33, 44, 42. Give your answer to 2 decimal places

    Answer: 28.43

Thursday 11 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000097 in standard form

    Answer: 9.7 × 10-5
  2. 2. Algebra

    Factorise: x² + x - 90

    Answer: (x + 10)(x - 9)
  3. 3. Geometry

    Adjacent = 14cm, angle = 38°. Find opposite. Give your answer to 2 decimal places

    Answer: 10.94cm
  4. 4. Ratio

    Divide 220 in the ratio 3:4:3

    Answer: 66, 88 and 66
  5. 5. Statistics

    The mean of 6 numbers is 36. If 5 of them are 43, 33, 32, 23, 34, what is the missing number?

    Answer: 51

Friday 12 August 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 840,000 in standard form

    Answer: 8.4 × 105
  2. 2. Algebra

    Factorise: x² + 6x - 7

    Answer: (x + 7)(x - 1)
  3. 3. Geometry

    Hypotenuse = 16cm, angle = 41°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio

    Express the first part of 2:4 as a fraction in simplest form

    Answer: 1⁄3
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 45, 40, 39, 43, what is the missing number?

    Answer: 23