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Free printable number line
Number line from 0 to 20 · 1 page
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A number line is a straight line with evenly spaced tick marks, each labeled with a number, and arrows on the ends to show the numbers keep going. This page prints three 0–20 number lines on a landscape sheet, a good size for desk work: kids put a finger or counter on a number and hop forward to add or back to subtract.
Number lines are one of the most useful models in elementary math. They show counting, adding and subtracting in kindergarten through 2nd grade, fractions in 3rd grade, decimals in 4th and 5th, and negative numbers in 6th. Change the range, count by 2s, 5s or 10s, add fraction or decimal marks, or hide some numbers for practice. Missing-number versions come with an answer key.
Tips for using it
- Draw the hops as little arcs above the line. 8 + 5 becomes five hops from 8, landing on 13.
- For subtraction, start at the bigger number and hop back. Ask: how many hops between 7 and 12?
- Laminate a sheet or slide it into a page protector and use a dry-erase marker.
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Questions
How do you use a number line for addition?
Start at the first number, then hop to the right as many times as the second number. Where you land is the answer. For 6 + 4, start at 6 and make four hops to land on 10.
What grade uses number lines?
From kindergarten on. The Common Core standards name number line diagrams in 2nd grade for adding and subtracting, in 3rd grade for fractions, and in 6th grade for negative numbers.
Why do number lines have arrows?
The arrows show that numbers keep going past the ends of the line, in both directions.