Question

A number line is drawn left to right with integers spaced 1 centimeter apart. An ant crawls onto the number line at +3. It then crawls 1.5 centimeters left, 4.9 centimeters right, and 7.6 centimeters left. Where is the ant on the number line now?

Answer 1

-1.2 cm

Explanation:

Let's figure out where the ant is after each step.

Step 1

Start at +3.0

Move left - 1.5

Now at +1.5

Step 2

Start at +1.5

Move right + 4.9

Now at +6.4

Step 3

Start at +6.4

Move left - 7.6

Now at -1.2

The ant is now at -1.2 cm.