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Lintel Dec 9 - 15 25 questions
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Monday 9 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    39000000

    Answer: 3.9 × 107
  2. 2. Algebra

    Factorise: x² + x - 20

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

    Hypotenuse = 15cm, angle = 49°. Find adjacent side

    Answer: 9.8cm
  4. 4. Ratio

    Simplify: 12:12:20

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

    The mean of 6 numbers is 23. If 5 of them are 20, 49, 35, 32, 32, what is the missing number?

    Answer: -30

Tuesday 10 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    12000000

    Answer: 1.2 × 107
  2. 2. Algebra

    Factorise: x² + 3x - 10

    Answer: (x + 5)(x - 2)
  3. 3. Geometry

    Adjacent = 27cm, angle = 37°. Find opposite

    Answer: 20.3cm
  4. 4. Ratio

    Simplify: 6:4:12

    Answer: 3:2:6
  5. 5. Statistics

    The mean of 6 numbers is 36. If 5 of them are 36, 43, 42, 18, 20, what is the missing number?

    Answer: 57

Wednesday 11 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.089

    Answer: 8.9 × 10-2
  2. 2. Algebra

    Factorise: x² - 8x + 15

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

    Hypotenuse = 33cm, angle = 41°. Find adjacent side

    Answer: 24.9cm
  4. 4. Ratio

    Simplify: 16:8:8

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

    Calculate the mean of: 37, 18, 19, 37, 16, 36, 50

    Answer: 30.4

Thursday 12 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    70000000

    Answer: 7 × 107
  2. 2. Algebra

    Factorise: x² - 8x + 12

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

    Adjacent = 30cm, angle = 32°. Find opposite

    Answer: 18.7cm
  4. 4. Ratio

    Divide 132 in the ratio 4:1:1

    Answer: 88, 22 and 22
  5. 5. Statistics

    Calculate the mean of: 28, 7, 13, 8, 17, 27, 33

    Answer: 19

Friday 13 December 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0073

    Answer: 7.3 × 10-3
  2. 2. Algebra

    Factorise: x² + x - 2

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

    Hypotenuse = 16cm, angle = 52°. Find adjacent side

    Answer: 9.9cm
  4. 4. Ratio

    Express the first part of 2:3 as a fraction in simplest form

    Answer: 25
  5. 5. Statistics

    The mean of 6 numbers is 24. If 5 of them are 29, 37, 38, 20, 34, what is the missing number?

    Answer: -14