Question

The girl starts at 0 and needs to get to 2.5 on a number line. How can you assist her in reaching her destination successfully?

• A. Should walk right, reach at middle of -2 and -3
• B. Should walk left, reach at middle of 2 and 3
• C. Should walk right, reach at middle of 2 and 3
• D. Should walk left, reach at middle of -2 and -3

Answer 1

The correct option is C Should walk right, reach at middle of 2 and 3

Since 2.5 is a terminating decimal number which is positive number

We know that positive numbers are represented right of 0 on a number line and negative number are represented left of 0 on a number line. Since 2.5 is a positive number, she has to walk to the right.

Middle of 2 and 3 = $\frac{2+3}{2}$ = 2.5

To reach at 2.5 on a number line, she needs to walk right of 0 on the number line and she has to stop at the middle of 2 and 3.
So, option (c) is the correct option by which you can assist her to reach the destination.