New
New
Year 6

Estimate and identify numbers on number lines

I can estimate and identify numbers on number lines.

New
New
Year 6

Estimate and identify numbers on number lines

I can estimate and identify numbers on number lines.

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Lesson details

Key learning points

  1. Understanding the scale of a number line helps to estimate and identify numbers on it.
  2. To determine the multiples that the number line increases in, take the whole and divide it by the number of parts.
  3. Locating the midpoint on a number line or between multiples helps to estimate.

Keywords

  • Estimate - When we estimate, we find a value that is close enough to the right answer, usually with some thought or calculation involved.

  • Midpoint - The midpoint is the middle of something - in this case the middle of a number line. It is the point halfway along.

Common misconception

Children may incorrectly place a number on a number line according to just counting the parts rather than working out the scale.

Determine the multiples that the number line is increasing in first: find the difference between the given start and end numbers and divide by the number of parts.

Children need to be confident with their common intervals before this lesson e.g. half, quarter, fifth and tenths of 100, 1,000, 10,000, 100,000 and 1,000,000 Consider providing a scaffold if children are less confident.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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6 Questions

Q1.
Match the expression to its answer.
Correct Answer:1,000,000 ÷ 10,= 100,000

= 100,000

Correct Answer:1,000,000 ÷ 5,= 200,000

= 200,000

Correct Answer:1,000,000 ÷ 4,= 250,000

= 250,000

Correct Answer:100,000 ÷ 5, = 20,000

= 20,000

Correct Answer:100,000 ÷ 4, = 25,000

= 25,000

Correct Answer:100,000 ÷ 10, = 10,000

= 10,000

Q2.
Match the statement to the answer.
Correct Answer:Half of 100 is,50

50

Correct Answer:Half of 500 is,250

250

Correct Answer:Half of 10,000 is,5,000

5,000

Correct Answer:Half of 50,000 is,25,000

25,000

Correct Answer:Half of 100,000 is,50,000

50,000

Correct Answer:Half of 1,000,000 is,500,000

500,000

Q3.
Look at the number line. What number is represented by the letter ‘a’?
An image in a quiz
Correct Answer: 1,200, 1200
Q4.
Look at the number line. Match the letters to the number that they represent.
An image in a quiz
Correct Answer:1,200,a

a

Correct Answer:1,600,b

b

Correct Answer:1,800,c

c

Q5.
Look at the number line. Find the sum of ‘a’ and ‘b’.
An image in a quiz
1,600
2,400
Correct answer: 2,800
3,000
Q6.
Look at the number line. Find the difference between ‘a’ and ‘c’.
An image in a quiz
Correct Answer: 600

6 Questions

Q1.
Look at the number line. Match the letters to the number that they represent.
An image in a quiz
Correct Answer:a ,8,250,000

8,250,000

Correct Answer:b,8,500,000

8,500,000

Correct Answer:c,8,750,000

8,750,000

Q2.
Look at the number line. Match the letters to the number that they represent.
An image in a quiz
Correct Answer:a ,620,000

620,000

Correct Answer:b,640,000

640,000

Correct Answer:c,660,000

660,000

Correct Answer:d,680,000

680,000

Q3.
Look at the number line. Identify the number represented by the letter ‘a’.
An image in a quiz
Correct Answer: 84,000
Q4.
Look at the number line. Identify the number represented by the letter ‘a’.
An image in a quiz
Correct Answer: 3,800,000
Q5.
Look at this section of a number line. Estimate the value of the number that the arrow is pointing to.
An image in a quiz
350,000
3,100,000
Correct answer: 3,500,000
3,900,000
Q6.
Look at this section of a number line. Estimate the value of the number that the arrow is pointing to.
An image in a quiz
9,345,698
9,500,000
Correct answer: 9,100,000
910,000