numberline
nounUK /ˈnʌmbəlaɪn/
US /ˈnʌmbərlaɪn/
A number line is a straight line with numbers placed on it in order.
We used a number line to count from one to ten.
OTHER MEANINGS
2. A visual tool in early math education for adding and subtracting by moving along the line.
The teacher showed us how to hop forward on the number line to add two.
3. A line marked with numbers at equal intervals used to represent real numbers.
On the number line, negative numbers sit to the left of zero.
4. A diagram in statistics or graphing where values are plotted along a horizontal line.
The data points were spread along the number line from 0 to 100.