New
New
Year 3

Position 3-digit numbers on number lines

I can position 3-digit numbers on number lines.

New
New
Year 3

Position 3-digit numbers on number lines

I can position 3-digit numbers on number lines.

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Lesson details

Key learning points

  1. Find the previous and next multiple of 10 or 100 to position numbers on a number line.
  2. The halfway steps can be used to help find the 5 or 50 numbers.
  3. Counting in steps of 1, 10 and 100 helps us to position a number on a number line.

Common misconception

Pupils may make errors using the halfway steps between numbers (e.g. wrongly label 374 as 379).

Encourage pupils to find and label the halfway steps (e.g. the 5 or the 50s numbers).

Keywords

  • Represent - Represent means showing something, or standing for something.

  • 3-digit number - A 3-digit number represents a number of hundreds, tens and ones.

  • Position - Position means where something is located.

Encourage the pupils to look at the steps between numbers and use counting to check theses. Are they counting in ones or tens?
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).

Video

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6 Questions

Q1.
What number is represented by the arrow on this section of the number line?
An image in a quiz
40
Correct answer: 50
60
Q2.
Which of these are not 3-digit numbers?
599
Correct answer: 1,000
Correct answer: 59
109
Q3.
What number is 10 less than 150?
Correct Answer: 140, one hundred and forty
Q4.
Which number is halfway between 50 and 70?
An image in a quiz
Correct Answer: 60, sixty
Q5.
Which of these numbers come between 140 and 160?
An image in a quiz
Correct answer: 147
165
139
Correct answer: 154
Q6.
What number is Andeep thinking of?
An image in a quiz
Correct Answer: 110, one hundred and ten

6 Questions

Q1.
What number is positioned halfway between 400 and 500?
An image in a quiz
405
550
415
Correct answer: 450
Q2.
What number is the arrow pointing to?
An image in a quiz
Correct Answer: 380
Q3.
What number is the arrow pointing to?
An image in a quiz
Correct Answer: 780, seven hundred and eighty
Q4.
Match the numbers to the labels on the number line.
An image in a quiz
Correct Answer:a,603

603

Correct Answer:b,607

607

Correct Answer:c,614

614

Correct Answer:d,618

618

Q5.
Sofia is thinking of a 10s number that could be represented on this number line. The digits of the number add up to 11. What is the number?
An image in a quiz
370
371
Correct answer: 380
363
Q6.
Andeep is thinking of a number that could be represented on this number line. The digits of the number add up to 13. What is the number?
An image in a quiz
Correct Answer: 553, five hundred and three