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Locate whole numbers on a number line

A whole number is represented by a point on a number line, with 0 as the starting reference and equal intervals representing equal increments in value. Learners interpret labeled and unlabeled scales, locate numbers through 1,000 by counting in ones, tens, or hundreds, and use positions to compare and order numbers; spacing reflects differences in value, not merely the visual length of labels. This understanding does not extend to negative numbers, fractions, decimals, or unrestricted larger-number scales.

Detailed Explanation: Locate whole numbers on a number line

A number line shows numbers in order from left to right. Start at 00. Equal spaces mean equal changes in value.

To locate a number:

  1. Find 00.
  2. Look at the labels to see what each step is worth.
  3. Count the equal intervals to the right until you reach the number.

Example: What number does point PP show?

The number line goes from 00 to 100100 and is divided into 1010 equal intervals:

0    |    |    |    P    |    |    |    |    |    100

Step 1: Find the value of each interval.

There are 1010 equal intervals from 00 to 100100:

100÷10=10100 \div 10 = 10

So, each step is 1010.

Step 2: Count from 00 to point PP:

10, 20, 30, 4010,\ 20,\ 30,\ 40

Point PP is at 4040.

P=40\boxed{P=40}

Learn by doing: Locate whole numbers on a number line

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Number Line - Positive Integers, Select Dot - From Ticks


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