Using a number line show how to find the sum or difference. 1.3 + 1.8
To find the sum of 1.3 + 1.8 using a number line, you can follow these steps:
1. Start by drawing a horizontal line representing the number line.
2. Mark 0 on the line by drawing a point or a small line segment.
3. Assign a unit distance to represent each increment on the number line. For simplicity, let's say each unit distance represents 0.1.
4. Starting from 0, count 1.3 units to the right on the number line. This will take you to the point corresponding to 1.3.
5. From this point, count an additional 1.8 units to the right on the number line. This will take you to the point corresponding to 3.1.
6. The point you have reached (3.1) represents the sum of 1.3 + 1.8 on the number line.
Therefore, the sum of 1.3 + 1.8 is 3.1 when represented on the number line.