Adding and Subtracting Integers

Mr. Buffington teaches how to add integers without a number line. The lesson covers the rules for adding integers with the same and different signs, provides practice problems, and includes a real-life application involving temperature changes. Students learn to find the sum or difference based on the signs and apply these skills to solve problems.

What are integers?

• Only zero

• Only positive numbers

• Only negative numbers

• Both positive and negative numbers

When using a number line, what is the result of adding -3, 9, and -5?

• 0

• 11

• 1

• 6

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

• Add the numbers and change the sign

• Add the numbers and keep the sign

• Subtract the numbers and change the sign

• Subtract the numbers and keep the sign

What is the result of adding -11 and -3?

• 14

• -14

• -8

• 8

What is the rule for adding integers with different signs?

• Subtract the numbers and change the sign

• Add the numbers and keep the sign of the larger number

• Subtract the numbers and keep the sign of the larger absolute value

• Add the numbers and change the sign

What is the result of adding 9 and -2?

• 11

• 7

• -7

• -11

What is the result of adding -7 and 15?

• -8

• 8

• 22

• -22

If the temperature is 87°F and drops by 5°F, what is the new temperature?

• 82°F

• 80°F

• 92°F

• 87°F

If the temperature is -3°C and drops by 6°C, what is the new temperature?

• -3°C

• 3°C

• -9°C

• 9°C

If the temperature is -4°F and rises by 10°F, what is the new temperature?

• -14°F

• 14°F

• -6°F

• 6°F