Adding, Subtracting, Multiplying, and Dividing Integers

What is -5(7)

• 2

• -35

• 35

• -2

-37 - 72

• 109

• -35

• 35

• -109

A negative times a negative is always a positive

• Always

• Sometimes

• Never

Answer the following:

12 + (-3) =

• 15

• -15

• 9

• -9

Which expression represents a temperature starting in the morning at 12 degrees below zero rising 14 degrees at noon, and falling 5 degrees that night?

• 12 + 14 + (-5)

• - 12 + 14 + 5

•  12 + (-14) + (-5)

• - 12 + 14 + (-5)

Coach Bob’s football team lost 8 yards, gained 5 yards, and lost 2 yards on their first 3 plays from the line of scrimmage.
The team’s current position is ​​ (a)   yards relative to the original line of scrimmage.
The additive inverse,​ (b)   represents the number of yards the team needs to gain in order to return to the original line of scrimmage.

• -5

• 5

• 15

• -15

Coach Bob’s football team lost 8 yards, gained 5 yards, and lost 2 yards on their first 3 plays from the line of scrimmage.
The team’s current position is ​​ (a)   yards relative to the original line of scrimmage.
The additive inverse,​ (b)   represents the number of yards the team needs to gain in order to return to the original line of scrimmage.

• -5

• 5

• 15

• -15

Match

• 3

• -7 - (-10)

• -216

• 18 + (-6)

• 11

• 24 - (-5)

• 12

• 72(-3)

• 29

• -3 + 14

When a submarine starts at sea level, goes down 250 feet, rises 80 feet, and descends another 18 feet, how would this be shown mathematically?

• 250 + 80 + (-18)

• -250 + 80 - (- 18)

• 250 + -( 80) + (- 18)

• -250 + 80 + (-18)

What is the rule when adding integers? For example: 13 + (-1) =

• If the signs are the same, add and keep the sign. If the signs are different, subtract and keep the sign of the larger whole number.

• A negative times a negative equals a positive.

• Same, Change, Change

• A negative divided by a positive equals a negative.