Math Rocks Integers

A submarine at -32 feet dives down 18 feet. After the dive, what will be the submarines elevation?

• 14

• -14

• -50

• 50

What can be added to these counters to make a zero pair?

• One red counter

• Two yellow counters

• Two yellow counters and one red counter

• Two red counters

Which expression matches the model?

Adding integers with the same sign:

• Subtract

• Add and keep the sign.

• Add and that is it.

• What is adding integers?

Adding integers with different signs

• Subtract and keep the sign of the LARGER number.

• Subtract and keep the number of the smaller signs.

• Adding integers is hard!

• Subtract and do not change the signs!

What integer addition equation is being modeled?

• -5 + -3 = -2

• -5 + 2 = -3

• -5 + 3 = -2

• 5 + 3 = 8

When adding a NEGATIVE number and NEGATIVE number,  your result will be...

• Positive

• Negative

• The sign of the larger absolute value

• The sign of the smaller absolute value

What is a zero pair? 

• Two negatives

• Two positives

• One negative, one positive

When you add opposites, what do you get?

• Zero

• A negative number

• It depends on which number has a larger absolute value.

• You cannot add opposites

The Cowboys lost 20 yards on the first play. On the second play, they gained 17 yards. Write an addition expression

• 20 + (-17)

• -20 + -17

• 20 + 17

• -20 + 17