Adding and Subtracting Integers with Models

What can be added to these counters to make zero?

• One red counter

• Two yellow counters

• Two yellow counters and one red counter

• Two red counters

What about when we subtract a negative number?

-5 - (-4)

• -1

• 1

• 9

• -9

Match the integer addition problem with the graph.

• 4 + (-5) = -1

• -5 + 4 = -1

• 4 + (-5) = 0

• None of these

Use the counters to find the sum of the integers. 

• 17

• -2

• -1

• -17

Subtracting is the same as adding the _____________.

• numbers

• additive inverse

• multiplying

• dividing

What is the answer to -2 - 8?

• -10

• 10

• 6

• -6

Which addition equation goes with this image?

• (+3) + (-3) = 0

• (-6) + (+3) = (-3)

• (+6) + (-3) = (+9)

• (+6) + (-3) = (+3)

When ADDING positive numbers on a number line, you move to the ____________.

• Right --->

• Left <---

When you add integers with the same sign, what do you do? 

• (+) and keep the sign

• (-) and keep the sign of the larger

• (x) and keep the sign

• (-) and keep the sign of the smaller

-35 - (-10)

• -25

• 25

• 45

• -45