Mastering the Midpoint & Distance on the Number Line
The midpoint of a segment is the average of its endpoints, taken coordinate by coordinate. The distance between them comes from the Pythagorean theorem applied to the horizontal and vertical gaps.
Worked examples: midpoint and distance on a number line
Practice questions on midpoint and distance
- Find the midpoint between the numbers (2) and (8) on the number line.
- Calculate the distance between the numbers (-7) and (3) on the number line.
- If the midpoint between two numbers (a) and (b) is (5), what is the value of (b) given (a = 3)?

- The midpoint is (5).
- The distance is (10) units.
- The value of (b) is (7).
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