Integer grade 5

Integer Operations

Pay extra attention to the operating sign.

Adding Integers

• If the signs are the SAME, ADD and KEEP the same sign. Ex: -13 + -27 = -40

• If the signs are DIFFERENT, SUBTRACT and use the sign of the STRONGER number. Ex: -24 + 5 = -19

Multiple Choice

$$-7+\left(-7\right)=...$$

• -7

• 0

• -14

• 14

Multiple Choice

$$-9+(-8)=x$$

• x = 1

• x = -1

• x = -17

• x = 17

Multiple Choice

$$-12+20=...$$

• 8

• -8

• -22

• 22

Multiple Choice

$$7+\left(-24\right)=...$$

• 34

• -34

• -17

• 17

Multiple Choice

During a 12 hour period, the temperature dropped 48 degrees F. How many degrees did the temperature drop each hour?

• $$4\degree F$$

• $$-4\degree F$$

• $$56\degree F$$

• $$-56\degree F$$

Multiple Choice

During the hot summer months, the height of the water in my pool decreases by 4 inches each week. What is the change in height over a six week period?

• 24 inches

• 10 inches

• -24 inches

• -10 inches

Subtracting Integers

• Rewrite as an addition problem.

• ADD the OPPOSITE

• Ex: 5 - (-2) becomes 5 + (+2) = 7

Multiple Choice

Rewrite $$-9-(-3)$$ using "add the opposite" strategy.

• -9 + 3

• (-9) + (-3)

• 9 + (-3)

• 9 + 3

Multiple Choice

$$7-\left(-9\right)=...$$

• -2

• 2

• -16

• 16

Multiple Choice

$$-15-\left(-7\right)=...$$

• -22

• -8

• 8

• 22

Multiple Choice

How many spaces is 4 from 0?

• 5

• 4

• 3

• 2

Multiple Choice

$$-7-\left(-2\right)=...$$

• -5

• -9

• 5

• 9

Multiple Choice

The windchill on a cold day made it feel like 5 degrees be this below zero outside. Write this temperature as an integer.

• 0

• 5

• -5

• -4

Poll

How do you feel about adding and subtracting integers?

• Awesome! I got it!!

• I'm at 75% or higher.

• I'm between 50% and 75%.

• I totally don't get it and need help.

Multiplying and
dividing Integers

• Same sign, POSITIVE answer.

• Different sign, NEGATIVE answer.

• Don't forget to multiply or divide.

Multiple Choice

$$-8\times-9=...$$

• 72

• 81

• -72

• -81

Multiple Choice

$$8\times-7=...$$

• 42

• -42

• 56

• -56

Multiple Choice

$$12\div\left(-4\right)=...$$

• 4

• -4

• -3

• 3

Multiple Choice

$$-36\div\left(-4\right)=...$$

• 9

• -9

• -6

• 6

Open Ended

$$-4\times2=8$$

Analysis that equation and give your opinion!

Open Ended

$$-4\div-2=-2$$

Analysis that equation and give your opinion!

Open Ended

Overall, how do you feel about operations with integers? Write in a complete sentence, your strengths and weaknesses with integers.