Subtracting Integers Made Simple

This lesson covers subtracting integers by adding their opposites. It includes examples demonstrating this concept, a step-by-step procedure for subtraction, and handling multiple operations. The lesson emphasizes the commutative and associative properties of addition to simplify complex operations.

What is the key concept to understand when subtracting integers?

• Subtracting a number is the same as adding its opposite.

• Subtracting a number is the same as multiplying by zero.

• Subtracting a number is the same as dividing by two.

• Subtracting a number is the same as adding one.

What is the result of 6 minus 3?

• 0

• 9

• 6

• 3

How do you handle the signs when adding integers with different signs?

• Add the numbers and keep the sign of the first number.

• Subtract the smaller number from the larger number and keep the sign of the number with the larger absolute value.

• Ignore the signs and add the numbers.

• Subtract the larger number from the smaller number and keep the sign of the smaller number.

What is the first step in the four-step procedure for subtracting integers?

• Add the numbers.

• Leave the first number unchanged.

• Change the number being subtracted to its opposite.

• Change the subtraction sign to an addition sign.

In the four-step procedure, what do you do after changing the subtraction sign to an addition sign?

• Multiply the numbers.

• Add the numbers.

• Change the number being subtracted to its opposite.

• Leave the first number unchanged.

What is the result of -7 minus 10 using the four-step procedure?

• -3

• -17

• 17

• 3

What is the result of 15 minus 23 using the four-step procedure?

• -8

• 13

• 8

• -13

When subtracting a negative number, what do you end up doing?

• Adding a positive number.

• Subtracting a positive number.

• Subtracting a negative number.

• Adding a negative number.

What is the result of -5 minus 7 minus 9 plus 1?

• -22

• -23

• -20

• -21

What is the result of 6 minus 7 minus -1 plus 3 minus 14 plus 8?

• -4

• -3

• -5

• -2