His frog hops 4 units to the right, 6 units to the left, and then 8 more units to the right. Write an expression (sum) to represent his frog’s movement.
Using a number line, start at −2, then count the indicated hops right or left.
Hops to the right can be represented with a positive number, while hops to the left can be represented with a negative number. Use this information to write an expression.
−2 + 4 − 6 + 8 = 4
Where does the frog land?
See part (a).
What number is the opposite of where Lucas’ frog landed?
Lucas' frog landed on a positive number. Then the opposite of this number is one equally far from 0 on the negative side. You can represent this by putting a negative sign in front of your answer in part (b).