Question

Which number line model represents the expression - 2 + 4.5?
Choose 1 answer​

Answer 1

To represent the expression -2 + 4.5 on a number line, start at -2 and move right by 4.5 units, which will give us a final value of 2.5.

Step-by-step explanation:

To represent the expression -2 + 4.5 on a number line, we start at the point -2 and move to the right by 4.5 units. This is because adding a positive number moves us to the right on the number line. Since 4.5 is larger than 2, the result will be a positive number. By subtracting 2 from 4.5, we get 2.5, which is the final position on the number line.

Here's a step-by-step explanation:

1. Locate the number -2 on the number line.
2. Move 4.5 units to the right, because we are adding a positive number.
3. The point you land on after moving 4.5 units to the right of -2 is 2.5.

The number line model representing the expression should indicate a starting point at -2 and an ending point at 2.5.