How to model 23 less than 55 on a number line
The Correct Answer and Explanation is:
To model “23 less than 55” on a number line, the phrase suggests a subtraction operation where 23 is subtracted from 55. Mathematically, this is expressed as:55−2355 – 2355−23
To find the result, you simply perform the subtraction. When you subtract 23 from 55, you get 32:55−23=3255 – 23 = 3255−23=32
Now, let’s model this on a number line. A number line is a straight line where numbers are positioned at equal intervals. To represent the subtraction, you would start at 55 on the number line and move 23 units to the left, because subtracting means going to smaller numbers.
Here’s the step-by-step process:
- Draw a horizontal line and mark a series of evenly spaced points on it, labeling some of the key numbers: 0, 10, 20, 30, 40, 50, and 60, etc.
- Find the point corresponding to 55 on the number line. This is where the starting position is.
- From 55, count 23 steps to the left. Each step represents a movement by 1 unit.
- After counting 23 units to the left, you will land on the number 32. This is the result of 55 – 23.
This visually demonstrates the operation of subtraction on a number line. The key idea here is that subtracting means moving to the left on the number line, and counting the steps shows the relationship between the two numbers.
