Adding Integers with Two Color Counters

This applet can be used to model arithmetic of integers with two color counters. The yellow "chips" represent +1, and the red "chips" represent -1.

Play time! What do you notice?

Let's show the addition problem: 2 + 4

Let's show the addition problem: -4 + (-3)

Let's show the addition problem: -6 + (-2)

Let's show the addition problem: 5 + (-3)

Use the counters above to help you solve the addition problems below. Copy the problem and write the sum.

1. 7 + (-7)[br]2. -5 + 5[br]3. 10 + (-4)[br]4. -5 + 9[br]5. -7 + 2[br]6. 3 + (-8)[br]

Copy the diagram below: What addition problem is being shown below? How do you know? Explain thoroughly.

Information: Adding Integers with Two Color Counters