Composition of one million and 10 million | Maths | Quizalize & Oak National Academy

Starter quiz

Select the correct value to complete the sentence. 100 is composed of ten equal parts of ___
- 5
- 10 ✓
- 15
- 20
- 50
Select the correct value to complete the sentence. 100 is composed of five equal parts of ___
- 10
- 15
- 20 ✓
- 25
- 50
Match the expression with the correct quotient.
- 100 ÷ 2
  
  ⇔
  
  50 ✓
- 100 ÷ 4
  
  ⇔
  
  25 ✓
- 100 ÷ 5
  
  ⇔
  
  20 ✓
- 100 ÷ 10
  
  ⇔
  
  10 ✓
Match the expression with its product.
- 1,000 × $\frac{1}{2}$
  
  ⇔
  
  500 ✓
- 1,000 × $\frac{1}{4}$
  
  ⇔
  
  250 ✓
- 1,000 × $\frac{1}{5}$
  
  ⇔
  
  200 ✓
- 1,000 × $\frac{1}{10}$
  
  ⇔
  
  100 ✓
Read the scale. There are three intervals marked with a letter. Match the letter to the number it represents on the scale.
- a
  
  ⇔
  
  300 ✓
- b
  
  ⇔
  
  600 ✓
- c
  
  ⇔
  
  900 ✓
Read the scale. There are three intervals marked with a letter. Match the letter to the number it represents on the scale.
- a
  
  ⇔
  
  2,000 ✓
- b
  
  ⇔
  
  6,000 ✓
- c
  
  ⇔
  
  8,000 ✓

Exit quiz

Look at the bar model and complete the sentence. Each part has a value of ___
- 100,000
- 200,000
- 250,000 ✓
- 500,000
Look at the bar model and complete the sentence. Each part has a value of ___
- 100,000
- 200,000 ✓
- 250,000
- 500,000
Read the scales. Which number is shown by the letter ‘a’?
- 500,000
- 700,000
- 750,000 ✓
- 800,000
- 900,000
Look at the bar model and complete the sentence. Each part has a value of ___
- 1,000,000
- 2,000,000 ✓
- 2,500,000
- 5,000,000
Read the scales. Which number is shown by the letter ‘a’?
- 100,000
- 750,000
- 1,000,000
- 2,500,000
- 7,500,000 ✓
An African Bush elephant has a mass of about 10 million grams. A Black rhinoceros has a mass one-fifth times this amount. What is the mass of the rhino? The mass of the rhino is ______ g
- '2,000,000' ✓

Worksheet

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Presentation

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Lesson Details

Key learning points

Unitising can be used to support the composition of 7- or 8- digit numbers.
If 250 is one quarter of one thousand, then 250,000 is one quarter of 1,000 thousands (1 million)
If 200 is one fifth of 1,000 then 200,000 is one fifth of 1,000,000
If 2,500 is one quarter of ten thousand, then 2,500,000 is one quarter of 10 thousand thousands (10 million)
If 2,000 is one fifth of 10,000 then 2,000,000 is one fifth of 10 thousand thousands (10,000,000)

Common misconception

Children may struggle to use unitising to make connections between the composition of 1,000 or 10,000 and one million or ten million.

Use the suggested stem sentences e.g. '250 is one quarter of 1,000, so one-quarter of 1,000 thousands must be 250 thousand' to support developing the unitising concept.

Keywords

Composition - The composition of a whole is the way in which it is made. For example, in the context of this lesson, we will look at equal parts of the whole.