Integer Number Line
Add or subtract integers and see the operation on a number line. An arrow shows the direction and distance of each move, making negative number operations visual and intuitive.
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Try an example
Answer
3 + 5 = 8
Number Line
Start (3) Result (8)
Step-by-Step
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2
3
Reference Guide
Adding Integers
Adding a positive number moves you to the right. Adding a negative number moves you to the left.
Subtracting Integers
Subtracting a positive number moves you to the left. Subtracting a negative flips the direction, moving you to the right.
The Double-Negative Rule
Subtracting a negative is the same as adding a positive. The two negatives "cancel out" and you move right instead of left.
Absolute Value as Distance
The absolute value of a number is its distance from zero on the number line, regardless of direction.
Both -5 and 5 are exactly 5 units away from zero.
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Related Labs
Integer Operations & Absolute Value Lab
Visualize integer addition and subtraction on a number line with directional arrows. Discover sign rules for multiplication and division. Explore absolute value as distance from zero
Number Path & Hop Count Lab
Hop forward and backward along a number path from 0 to 20. Discover how adding and subtracting relate as opposite hops on the same path. Grades K-1.
Number Bonds & Fact Families Lab
Decompose numbers into two parts and discover all four related addition and subtraction facts. Record your findings and explore patterns. Grades K-3.
Ten-Frame & Subitizing Lab
Investigate how different arrangements on a ten-frame change how quickly you recognize a number. Record data and find the patterns that help you subitize faster. Grades K-1.
