To find out how many spaces you move on a number line when calculating -19 + 12.1, you can follow these steps:
- Starting Point: Begin at -19.
- Adding 12.1: Since you're adding a positive number (12.1), you will move to the right on the number line.
Now, perform the calculation:
\[ -19 + 12.1 = -6.9 \]
- Distance Moved: To find out how many spaces you moved from -19 to -6.9, calculate the distance:
\[ |-19 - (-6.9)| = |-19 + 6.9| = |-12.1| = 12.1 \]
So, you move 12.1 spaces on the number line.