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Lintel Mar 14 - 20 25 questions
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Monday 14 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000016 in standard form

    Answer: 1.6 × 10-5
  2. 2. Algebra

    Factorise: x² + 5x - 24

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

    Hypotenuse = 24cm, angle = 40°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 18.39cm
  4. 4. Ratio

    Simplify: 8:8:20

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

    Calculate the mean of: 21, 22, 28, 12, 15, 8, 15, 18. Give your answer to 2 decimal places

    Answer: 17.38

Tuesday 15 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 3,000,000 in standard form

    Answer: 3 × 106
  2. 2. Algebra

    Factorise: x² + 2x - 63

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

    Adjacent = 18cm, angle = 52°. Find opposite. Give your answer to 2 decimal places

    Answer: 23.04cm
  4. 4. Ratio

    Divide 135 in the ratio 2:3:4

    Answer: 30, 45 and 60
  5. 5. Statistics

    The mean of 5 numbers is 28. If 4 of them are 17, 28, 39, 32, what is the missing number?

    Answer: 24

Wednesday 16 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000081 in standard form

    Answer: 8.1 × 10-5
  2. 2. Algebra

    Factorise: x² + 9x - 10

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

    Hypotenuse = 19cm, angle = 43°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 13.9cm
  4. 4. Ratio

    Express the first part of 7:12 as a fraction in simplest form

    Answer: 7⁄19
  5. 5. Statistics

    The mean of 5 numbers is 33. If 4 of them are 49, 22, 27, 46, what is the missing number?

    Answer: 21

Thursday 17 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 430,000 in standard form

    Answer: 4.3 × 105
  2. 2. Algebra

    Factorise: x² - 6x - 7

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

    Adjacent = 13cm, angle = 48°. Find opposite. Give your answer to 2 decimal places

    Answer: 14.44cm
  4. 4. Ratio

    Divide 184 in the ratio 2:1:1

    Answer: 92, 46 and 46
  5. 5. Statistics

    Calculate the mean of: 38, 20, 46, 25, 10, 43, 39. Give your answer to 2 decimal places

    Answer: 31.57

Friday 18 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 99,000,000 in standard form

    Answer: 9.9 × 107
  2. 2. Algebra

    Factorise: x² + 20x + 99

    Answer: (x + 11)(x + 9)
  3. 3. Geometry

    Adjacent = 12cm, angle = 34°. Find opposite. Give your answer to 2 decimal places

    Answer: 8.09cm
  4. 4. Ratio

    Black and white marbles are in the ratio 5:6. What fraction of the marbles are white?

    Answer: 6⁄11
  5. 5. Statistics

    Calculate the mean of: 16, 44, 20, 44, 11, 22, 8, 37

    Answer: 25.25