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Lintel May 13 - 19 25 questions
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Monday 13 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 9,200,000 in standard form

    Answer: 9.2 × 106
  2. 2. Algebra

    Factorise: x² - x - 2

    Answer: (x + 1)(x - 2)
  3. 3. Geometry

    Adjacent = 10cm, angle = 41°. Find opposite. Give your answer to 2 decimal places

    Answer: 8.69cm
  4. 4. Ratio

    £306.00 is shared between A and B in the ratio 4:5. How much does A receive?

    Answer: £136.00
  5. 5. Statistics

    The mean of 4 numbers is 32. If 3 of them are 15, 31, 18, what is the missing number?

    Answer: 64

Tuesday 14 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 14,000,000 in standard form

    Answer: 1.4 × 107
  2. 2. Algebra

    Factorise: x² + 2x - 24

    Answer: (x + 6)(x - 4)
  3. 3. Geometry

    Adjacent = 13cm, angle = 54°. Find opposite. Give your answer to 2 decimal places

    Answer: 17.89cm
  4. 4. Ratio

    Simplify: 9:9:12

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

    Calculate the mean of: 20, 17, 28, 16, 46, 36. Give your answer to 2 decimal places

    Answer: 27.17

Wednesday 15 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.002 in standard form

    Answer: 2 × 10-3
  2. 2. Algebra

    Factorise: x² + 10x + 9

    Answer: (x + 9)(x + 1)
  3. 3. Geometry

    Hypotenuse = 37cm, angle = 47°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 25.23cm
  4. 4. Ratio

    Red and blue marbles are in the ratio 14:13. What fraction of the marbles are blue?

    Answer: 13⁄27
  5. 5. Statistics

    The mean of 5 numbers is 34. If 4 of them are 15, 50, 39, 26, what is the missing number?

    Answer: 40

Thursday 16 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 66,000,000 in standard form

    Answer: 6.6 × 107
  2. 2. Algebra

    Factorise: x² + 12x + 11

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

    Adjacent = 25cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio

    Express the first part of 14:11 as a fraction in simplest form

    Answer: 14⁄25
  5. 5. Statistics

    The mean of 6 numbers is 34. If 5 of them are 26, 43, 47, 40, 29, what is the missing number?

    Answer: 19

Friday 17 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.06 in standard form

    Answer: 6 × 10-2
  2. 2. Algebra

    Factorise: x² + 7x - 30

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

    Hypotenuse = 23cm, angle = 27°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 20.49cm
  4. 4. Ratio

    Black and white beads are in the ratio 13:9. What fraction of the beads are black?

    Answer: 13⁄22
  5. 5. Statistics

    Calculate the mean of: 10, 40, 32, 21, 41, 30, 22

    Answer: 28