Number Line Estimation

In mathematics, a line with points marked on it is termed as number line. Every point represents a number in number line. This number line is mainly used for representing the numbers. From online, we have a clear description of number line estimation. This article gives the explanation of number line estimation and some example problems using number line.

Explanation to Number Line Estimation:

The facts of number line is as follows.

• A straight horizontal line with points that are evenly spaced.
• A number o is at center and positive numbers are at right side of 0 while the negative numbers are at left side of 0.
• The number line makes easy the arithmetic operations addition and subtraction.

A number line with points is as follows.

Let us see some example problems using number line.

Example Problems to Number Line Estimation:

Example: 1

Estimate a number 5 between the numbers 0 to 8.

Solution:

The estimation of a number 5 is as follows.

Example: 2

Estimate a negative number - 5 between -9 to 0.

Solution:

The estimation of a negative number -5 is as follows.

Example: 3

Add the numbers 1 and 6 using number line.

Solution:

Given: 1 + 6

Step 1:

Mark 1 on number line.

Step 2:

Start count and move from 1 at right side.

Step 3:

Stop count when it reaches 6 and mark the resultant value.

Answer: 7

Example: 4

Subtract 2 from 4 using number line.

Solution:

Given: 4 - 2

Step 1:

Mark a number 4 on number line.

Step 2:

Start count and move from 4 at left side.

Step 3:

Stop count when it reaches 2 and mark the resultant value.

Answer: 2

Practice Problems to Number Line Estimation:

Problem: 1

Add the numbers 2 and 6 using number line.

Answer: 8

Problem: 2

Subtract 3 from 4 using number line.

Answer: 1