Subtracting Integers: Key Concepts and Examples

Mr. Richards explains how to subtract integers using real-world examples and number lines. He introduces the rule of subtracting integers by adding their additive inverse and demonstrates this with various examples. The Keep Change Opposite method is highlighted as a useful technique. The video concludes with evaluating expressions and solving a real-world problem involving integer subtraction.

What is the height of the diving board platform in the real-world example?

• 4 meters

• 3 meters

• 2 meters

• 1 meter

What is the result of 3 minus 4?

• 1

• -1

• 0

• 4

Using a number line, what is the result of 1 minus 5?

• -3

• -4

• -6

• -5

What is the related addition sentence for 1 minus 5?

• 1 + 5 = 6

• 1 + (-5) = -4

• 1 + 5 = -4

• 1 + (-5) = -6

What is the rule for subtracting integers?

• Subtract the smaller number from the larger number

• Add the additive inverse

• Multiply the integers

• Divide the integers

What is the result of 6 minus 12 using the KCO method?

• -12

• 6

• -6

• 12

What is the result of -20 minus 15 using the KCO method?

• 5

• -5

• 35

• -35

What is the result of 4 minus (-12) using the KCO method?

• -16

• 16

• -8

• 8

What is the result of evaluating the expression 4B - 10 when B is -8?

• 2

• -2

• 18

• -18

What is Brenda's new bank balance after being charged a $10 fee, starting from -$52?

• -$42

• -$52

• -$72

• -$62