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Lintel Jan 2 - 8 25 questions
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Monday 2 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 740,000,000 in standard form

    Answer: 7.4 × 108
  2. 2. Algebra

    Factorise: x² + x - 110

    Answer: (x + 11)(x - 10)
  3. 3. Geometry

    Adjacent = 20cm, angle = 37°. Find opposite. Give your answer to 2 decimal places

    Answer: 15.07cm
  4. 4. Ratio

    Simplify the ratio 8m : 20cm

    Answer: 40:1
  5. 5. Statistics

    The mean of 5 numbers is 27. If 4 of them are 25, 23, 22, 24, what is the missing number?

    Answer: 41

Tuesday 3 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00091 in standard form

    Answer: 9.1 × 10-4
  2. 2. Algebra

    Factorise: x² + x - 42

    Answer: (x + 7)(x - 6)
  3. 3. Geometry

    Hypotenuse = 25cm, angle = 39°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 19.43cm
  4. 4. Ratio

    £384.00 is shared between A and B in the ratio 5:3. How much does A receive?

    Answer: £240.00
  5. 5. Statistics

    Calculate the mean of: 46, 34, 13, 21, 7, 18. Give your answer to 2 decimal places

    Answer: 23.17

Wednesday 4 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0009 in standard form

    Answer: 9 × 10-4
  2. 2. Algebra

    Factorise: x² - x - 12

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

    Hypotenuse = 40cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 32.36cm
  4. 4. Ratio

    Simplify: 6:4:8

    Answer: 3:2:4
  5. 5. Statistics

    The mean of 5 numbers is 36. If 4 of them are 47, 42, 15, 33, what is the missing number?

    Answer: 43

Thursday 5 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 53,000,000 in standard form

    Answer: 5.3 × 107
  2. 2. Algebra

    Factorise: x² - 14x + 45

    Answer: (x - 5)(x - 9)
  3. 3. Geometry

    Adjacent = 24cm, angle = 57°. Find opposite. Give your answer to 2 decimal places

    Answer: 36.96cm
  4. 4. Ratio

    Divide 145 in the ratio 2:2:1

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

    Calculate the mean of: 43, 13, 46, 44, 21, 45, 21. Give your answer to 2 decimal places

    Answer: 33.29

Friday 6 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.058 in standard form

    Answer: 5.8 × 10-2
  2. 2. Algebra

    Factorise: x² + 3x - 4

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

    Hypotenuse = 19cm, angle = 27°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 16.93cm
  4. 4. Ratio

    Express the first part of 8:13 as a fraction in simplest form

    Answer: 8⁄21
  5. 5. Statistics

    Calculate the mean of: 47, 44, 39, 49, 38, 30, 6. Give your answer to 2 decimal places

    Answer: 36.14