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Lintel May 24 - 30 25 questions
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Monday 24 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.079 in standard form

    Answer: 7.9 × 10-2
  2. 2. Algebra

    Factorise: x² - 12x + 35

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

    Hypotenuse = 22cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.98cm
  4. 4. Ratio

    Divide 180 in the ratio 4:4:1

    Answer: 80, 80 and 20
  5. 5. Statistics

    Calculate the mean of: 49, 36, 42, 48, 36, 12, 35. Give your answer to 2 decimal places

    Answer: 36.86

Tuesday 25 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 29,000,000 in standard form

    Answer: 2.9 × 107
  2. 2. Algebra

    Factorise: x² + 2x - 3

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

    Adjacent = 19cm, angle = 51°. Find opposite. Give your answer to 2 decimal places

    Answer: 23.46cm
  4. 4. Ratio

    Simplify: 6:12:9

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

    The mean of 5 numbers is 26. If 4 of them are 29, 21, 21, 30, what is the missing number?

    Answer: 29

Wednesday 26 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0059 in standard form

    Answer: 5.9 × 10-3
  2. 2. Algebra

    Factorise: x² + 3x - 40

    Answer: (x + 8)(x - 5)
  3. 3. Geometry

    Hypotenuse = 40cm, angle = 59°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 20.6cm
  4. 4. Ratio

    Divide 128 in the ratio 4:3:1

    Answer: 64, 48 and 16
  5. 5. Statistics

    The mean of 4 numbers is 31. If 3 of them are 27, 29, 50, what is the missing number?

    Answer: 18

Thursday 27 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 860,000,000 in standard form

    Answer: 8.6 × 108
  2. 2. Algebra

    Factorise: x² + 6x + 5

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

    Adjacent = 27cm, angle = 51°. Find opposite. Give your answer to 2 decimal places

    Answer: 33.34cm
  4. 4. Ratio

    Divide 144 in the ratio 2:4:3

    Answer: 32, 64 and 48
  5. 5. Statistics

    Calculate the mean of: 46, 42, 10, 21, 44, 22. Give your answer to 2 decimal places

    Answer: 30.83

Friday 28 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 340,000 in standard form

    Answer: 3.4 × 105
  2. 2. Algebra

    Factorise: x² - x - 20

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

    Adjacent = 11cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.31cm
  4. 4. Ratio

    Red and blue beads are in the ratio 8:2. What fraction of the beads are blue?

    Answer: 1⁄5
  5. 5. Statistics

    Calculate the mean of: 38, 46, 14, 13, 6, 10, 13

    Answer: 20