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).

## Starter quiz

### 6 Questions

Q1.
What number is represented by the arrow on this section of the number line?
40
60
Q2.
Which of these are not 3-digit numbers?
599
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?
Q5.
Which of these numbers come between 140 and 160?
165
139
Q6.
What number is Andeep thinking of?
Correct Answer: 110, one hundred and ten

## Exit quiz

### 6 Questions

Q1.
What number is positioned halfway between 400 and 500?
405
550
415
Q2.
What number is the arrow pointing to?
Q3.
What number is the arrow pointing to?
Correct Answer: 780, seven hundred and eighty
Q4.
Match the numbers to the labels on the number line.

603

607

614