Subtracting Integers Using Integer Counters

This video tutorial explains how to subtract integers using integer counters. It covers three examples: subtracting +15 and -4, -5 and +7, and -12 and -10. The video demonstrates the use of zero pairs to facilitate subtraction when necessary and compares this method with the additive inverse approach. The tutorial aims to enhance understanding of integer subtraction with different signs.

What is the result of +15 - (-4) using integer counters?

• +21

• +9

• +19

• +11

How many zero pairs are needed to solve +15 - (-4)?

• 5

• 4

• 3

• 2

What is the result of -5 - (+7) using integer counters?

• -2

• -8

• -12

• -10

How many zero pairs are required to solve -5 - (+7)?

• 8

• 5

• 6

• 7

What is the result of -12 - (-10) using integer counters?

• -10

• 0

• -2

• -22