Number lines
Locate and identify whole numbers on a number line.
Objective
Locate and identify whole numbers on a number line.
What it means
A number line is a straight line with numbers placed in order at equal distances, used to show where a number is.
Key terms
- number line
- a line showing numbers in order at equal spaces
- point
- a mark on the number line showing a number's location
Rules to remember
- Numbers increase from left to right.
- Equal spaces between marks represent equal jumps.
Step by step
- 1Find the spacingLook at two labeled points to see how much each space is worth.
- 2Count spacesCount spaces from a known point to find the marked value.
Common mistakes
- Counting the starting point as a space.
- Confusing 'before' (left) with 'after' (right).
Tips
- Numbers get bigger moving right, smaller moving left.
- Count the spaces, not the marks.