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Lintel Mar 17 - 23 25 questions
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Monday 17 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 73,000 in standard form

    Answer: 7.3 × 104
  2. 2. Algebra

    Factorise: x² - 12x + 32

    Answer: (x - 4)(x - 8)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 55°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.8cm
  4. 4. Ratio

    Simplify the ratio £6 : 50p

    Answer: 12:1
  5. 5. Statistics

    The mean of 4 numbers is 24. If 3 of them are 31, 17, 28, what is the missing number?

    Answer: 20

Tuesday 18 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 88,000 in standard form

    Answer: 8.8 × 104
  2. 2. Algebra

    Factorise: x² + 10x - 11

    Answer: (x + 11)(x - 1)
  3. 3. Geometry

    Hypotenuse = 24cm, angle = 38°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 18.91cm
  4. 4. Ratio

    Simplify the ratio 5 hours : 55 minutes

    Answer: 60:11
  5. 5. Statistics

    The mean of 6 numbers is 30. If 5 of them are 26, 31, 25, 41, 48, what is the missing number?

    Answer: 9

Wednesday 19 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.013 in standard form

    Answer: 1.3 × 10-2
  2. 2. Algebra

    Factorise: x² - 4x - 5

    Answer: (x + 1)(x - 5)
  3. 3. Geometry

    Adjacent = 14cm, angle = 45°. Find opposite

    Answer: 14cm
  4. 4. Ratio

    Red, blue and green sweets are in the ratio 1:1:5. What fraction of the sweets are green?

    Answer: 5⁄7
  5. 5. Statistics

    Calculate the mean of: 32, 31, 18, 25, 7, 22

    Answer: 22.5

Thursday 20 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 490,000,000 in standard form

    Answer: 4.9 × 108
  2. 2. Algebra

    Factorise: x² + 8x - 20

    Answer: (x + 10)(x - 2)
  3. 3. Geometry

    Hypotenuse = 39cm, angle = 40°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 29.88cm
  4. 4. Ratio

    £235.00 is shared between A and B in the ratio 2:3. How much does A receive?

    Answer: £94.00
  5. 5. Statistics

    The mean of 5 numbers is 29. If 4 of them are 41, 23, 42, 16, what is the missing number?

    Answer: 23

Friday 21 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000021 in standard form

    Answer: 2.1 × 10-5
  2. 2. Algebra

    Factorise: x² - 12x + 35

    Answer: (x - 5)(x - 7)
  3. 3. Geometry

    Adjacent = 18cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 11.25cm
  4. 4. Ratio

    In ratio 4:6:2, what fraction is the third part?

    Answer: 1⁄6
  5. 5. Statistics

    Calculate the mean of: 6, 20, 19, 10, 44, 10. Give your answer to 2 decimal places

    Answer: 18.17