Evaluating Expressions (Positive and Negative Integers)

Which strategy was not used for evaluating integer expressions?

• Absolute value scoreboard

• Counters

• Number lines

• All of the above

Which expression is modeled with these counters?

• -4-(-2)

• -4-2

• 4-2

• 4-(-2)

Match these.

• A

• B

• C

• A

• B

• C

Match the expression to the Scoreboard.

• -5 +10 + (-22) + 30

• -5 +10 + (-22) + (-30)

• 5 +(-10) + (-22) + 30

• A

• B

• C

• D

• A

• B

• C

• D

4+(-3)

• 7

• -7

• 1

• -1

-5+(-4)

• 9

• -9

• 1

• -1

-5+3

• 8

• -8

• -2

• 2