Exploring Rational Expressions: Addition and Subtraction

This video tutorial covers the rules for adding and subtracting integers. It explains three main rules: adding integers with the same sign, adding integers with different signs, and converting subtraction into addition by using the opposite. The video provides examples for each rule to help clarify the concepts and offers shortcuts for remembering the rules.

What is the result of adding 2 and 5, both positive integers?

• 2

• 5

• 7

• 3

When adding -2 and -5, what is the result?

• 7

• -3

• 3

• -7

What is the first rule for adding integers with the same sign?

• Subtract the lesser absolute value from the greater

• Add the absolute values and use the sign of the larger number

• Add the absolute values and use the common sign

• Subtract the absolute values and use the common sign

What is the rule for adding integers with different signs?

• Subtract the lesser absolute value from the greater and use the sign of the number with the greater absolute value

• Add the absolute values and use the sign of the larger number

• Subtract the absolute values and use the sign of the smaller number

• Add the absolute values and use the common sign

What is the result of adding 2 and -5?

• 3

• 7

• -7

• -3

What is the result of adding -2 and 5?

• -7

• 3

• -3

• 7

What is the third rule for subtracting integers?

• Subtract the absolute values and use the common sign

• Rewrite the problem as an addition problem by adding the opposite

• Add the absolute values and use the sign of the larger number

• Subtract the lesser absolute value from the greater

What is the result of 3 minus 12?

• -15

• 15

• -9

• 9

What is the result of -3 plus -8?

• 11

• 5

• -11

• -5

What is the result of -5 plus 5?

• 5

• 0

• -10

• 10