Maths dictionary

What is a number line?

A number line is a straight line with numbers placed in order at equal spacing. It helps with counting, adding, subtracting and negative numbers.

Definition

A number line is a straight line with numbers placed in order at equal spacing. It helps with counting, adding, subtracting and negative numbers.

Example

To work out 2 + (−5), start at 2 and move 5 steps left to −3.

Tip

Numbers increase to the right.

Practise it

Learn it visually: Negative Numbers (interactive lesson)
Worksheets: Skip counting (Grade 1)
Online maths practice

Quick check: try these

Work each one out on paper, then tap the question to see the answer.

6, 8, 10, 12, ___
Answer: 14
9, 12, 15, 18, ___
Answer: 21
4, 6, 8, ___, 12
Answer: 10
8, 12, 16, ___, 24
Answer: 20

Learn it in depth

Number line is part of Integers for Class 7: notes, formulas, solved examples with every step, common mistakes and ten practice questions with answers. Want a teacher to go through it with you? See Class 7 maths tuition.

Related words

Negative number