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Lintel Mar 9 - 15 25 questions
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Monday 9 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0069

    Answer: 6.9 × 10-3
  2. 2. Algebra

    Factorise: x² - 11x + 30

    Answer: (x - 5)(x - 6)
  3. 3. Geometry

    Hypotenuse = 28cm, angle = 34°. Find adjacent side

    Answer: 23.2cm
  4. 4. Ratio

    Simplify: 12:6:9

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

    The mean of 6 numbers is 35. If 5 of them are 28, 38, 27, 40, 49, what is the missing number?

    Answer: 28

Tuesday 10 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0005

    Answer: 5 × 10-4
  2. 2. Algebra

    Factorise: x² - 8x + 12

    Answer: (x - 2)(x - 6)
  3. 3. Geometry

    Adjacent = 22cm, angle = 60°. Find opposite

    Answer: 38.cm
  4. 4. Ratio

    Divide 153 in the ratio 4:3:2

    Answer: 68, 51 and 34
  5. 5. Statistics

    The mean of 5 numbers is 35. If 4 of them are 42, 42, 24, 40, what is the missing number?

    Answer: 27

Wednesday 11 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    1500000

    Answer: 1.5 × 106
  2. 2. Algebra

    Factorise: x² + 5x - 14

    Answer: (x + 7)(x - 2)
  3. 3. Geometry

    Hypotenuse = 17cm, angle = 53°. Find adjacent side

    Answer: 10.2cm
  4. 4. Ratio

    Express the first part of 4:2 as a fraction in simplest form

    Answer: 23
  5. 5. Statistics

    Calculate the mean of: 12, 47, 34, 11, 43, 46, 33, 43

    Answer: 33.6

Thursday 12 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.067

    Answer: 6.7 × 10-2
  2. 2. Algebra

    Factorise: x² + 2x - 3

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

    Adjacent = 15cm, angle = 54°. Find opposite

    Answer: 20.6cm
  4. 4. Ratio

    Express the first part of 5:2 as a fraction in simplest form

    Answer: 57
  5. 5. Statistics

    Calculate the mean of: 9, 41, 18, 37, 46, 38, 48

    Answer: 33.9

Friday 13 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    42000

    Answer: 4.2 × 104
  2. 2. Algebra

    Factorise: x² - 8x + 15

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

    Hypotenuse = 20cm, angle = 59°. Find adjacent side

    Answer: 10.3cm
  4. 4. Ratio

    Divide 108 in the ratio 1:1:4

    Answer: 18, 18 and 72
  5. 5. Statistics

    The mean of 4 numbers is 27. If 3 of them are 49, 44, 42, what is the missing number?

    Answer: -27