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Lintel Mar 18 - 24 25 questions
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Monday 18 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0006

    Answer: 6 × 10-4
  2. 2. Algebra

    Factorise: x² - 10x + 21

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

    Hypotenuse = 21cm, angle = 46°. Find adjacent side

    Answer: 14.6cm
  4. 4. Ratio

    Simplify: 24:24:12

    Answer: 2:2:1
  5. 5. Statistics

    Calculate the mean of: 50, 7, 36, 12, 37, 37

    Answer: 29.8

Tuesday 19 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    33000000

    Answer: 3.3 × 107
  2. 2. Algebra

    Factorise: x² + x - 12

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

    Adjacent = 20cm, angle = 38°. Find opposite

    Answer: 15.6cm
  4. 4. Ratio

    Express the first part of 6:5 as a fraction in simplest form

    Answer: 611
  5. 5. Statistics

    The mean of 6 numbers is 33. If 5 of them are 48, 39, 25, 44, 17, what is the missing number?

    Answer: 25

Wednesday 20 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.031

    Answer: 3.1 × 10-2
  2. 2. Algebra

    Factorise: x² + 2x - 3

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

    Hypotenuse = 26cm, angle = 38°. Find adjacent side

    Answer: 20.5cm
  4. 4. Ratio

    Divide 84 in the ratio 2:1:1

    Answer: 42, 21 and 21
  5. 5. Statistics

    Calculate the mean of: 49, 42, 37, 31, 11, 20

    Answer: 31.7

Thursday 21 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    41000000

    Answer: 4.1 × 107
  2. 2. Algebra

    Factorise: x² - 10x + 24

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

    Adjacent = 23cm, angle = 39°. Find opposite

    Answer: 18.6cm
  4. 4. Ratio

    Simplify: 18:6:12

    Answer: 3:1:2
  5. 5. Statistics

    The mean of 6 numbers is 35. If 5 of them are 18, 26, 25, 31, 34, what is the missing number?

    Answer: 76

Friday 22 March 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0027

    Answer: 2.7 × 10-3
  2. 2. Algebra

    Factorise: x² - 11x + 30

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

    Hypotenuse = 31cm, angle = 61°. Find adjacent side

    Answer: 15cm
  4. 4. Ratio

    Simplify: 8:16:24

    Answer: 1:2:3
  5. 5. Statistics

    The mean of 4 numbers is 26. If 3 of them are 34, 24, 26, what is the missing number?

    Answer: 20