Number Line
Where is the arrow pointing? Start with lines where every mark has its number written under it, then lines where only some of them do — and then the same job in tenths, below zero and in fractions.
No account, and the maths stays in your browser — more— less
This activity is for learning and practice. Anything it suggests is indicative only — it is not a formal assessment and not a substitute for a teacher or tutor.
Nothing you answer is sent to Zerdly. Progress is saved on this device only if you switch saving on, and you can delete it at any time. How Kids Maths handles data.
Set your country and age — change
Setting an age keeps the questions at the right level for that age. It does not lock anything — you can still try any topic, at any age, in any order. Levels are a guide only, not a curriculum.
Your age is not saved anywhere. Your country is remembered only if you have switched saving on.
Saving your progress
Nothing is being saved. You can practise as much as you like — when you close the tab, the session is gone.
Work out what one gap is worth first
Every one of these questions is the same question underneath. Find two numbers that are written on the line, count how many marks sit between them, and divide. That tells you what one small gap is worth. After that you just count gaps.
The most common slip is answering with the number of marks instead of the value — saying “3” when the arrow is three marks past 0.5 on a line counting in tenths. Three marks, yes; but the number is 0.8.
One picture that holds every kind of number
A number line is the only place a child can see that −3, 0.7 and 3/4 are all just numbers with a position, sitting in order alongside the counting numbers they already know. That is why the harder levels here change the kind of number rather than the size of it: the work is identical, and noticing that is the point.
- Below zero — the numbers keep going left, and they get smaller as they do.
- Tenths — the gap between two whole numbers is cut into ten, so each mark is worth 0.1.
- Fractions — the same line, cut into quarters, fifths or eighths. Only the whole numbers are written, so the answer has to be counted out.
School levels
School levels are a guide only. They show where a skill is usually taught in each country and are not taken from, aligned to, or endorsed by any curriculum authority. Your school may cover it earlier or later.