Adding, Subtracting, Multiplying, and Dividing Integers

The temperature was -5 degrees Fahrenheit in the morning, but by lunch time the temperature had increased 15 degrees.

Which of the equations below would you use to find the temperature at lunch time?

• -5 - 15 =

• -5(15) =

• -5 + 15 =

• 15/-5 =

Solve: 8 - 10 =

• 2

• 18

• -2

• -18

Solve: -24/(-6) =

• -4

• 4

• 18

• -18

When adding integers with the same sign you ________________.

• Subtract and keep the sign of the larger number.

• Add and keep the sign.

A negative PLUS a negative will give you what on your final answer.

• Positive

• Negative

When subtracting integers you must________________________.

• Subtract like normal.

• Keep the first sign, keep it a subtracting problem, and find the reciprocal of the second integer.

• Keep the first sign, keep it a subtracting problem, and find the opposite of the second integer.

• Keep the first sign, change it to addition, find the opposite of the second integer, use your adding rules.

True or False: When MULTIPLYING AND DIVIDING integers, they follow the same rules.

• True

• False

A negative MULTIPLIED/DIVIDED by a negative will give you what answer?

• Positive

• Negative

A positive MULTIPLIED/DIVIDED by a negative will give you what answer?

• Positive

• Negative

(-98) + (-45) =

• -143

• 143

• 45

• -45