Subtracting Integers

Subtracting Integers

Multiple Choice

Subtracting is the same as...

• adding

• adding a negative

• subtracting a negative

• multiplying

Reminders:

• Subtracting is the same as adding a negative

• When we subtract, we want to do KEEP-CHANGE-CHANGE or ADD THE OPPOSITE

Let's make sure we can change subtraction problems to addition problems

Multiple Choice

4-6 is the same as

• -4+6

• 4-(-6)

• 4+(-6)

• 4+6

Multiple Choice

-5-3 is the same as

• -5+3

• 5+(-3)

• -5+(-3)

• -5-(-3)

Multiple Choice

10-(-2) is the same as

• 10+2

• -10-2

• 10-2

• 10+(-2)

Don't forget our addition rules!

Same signs = add and keep the sign

Different signs = subtract and take the sign of the greater number

Let's try some problems!

Multiple Choice

6 - 2 =

• 4

• -4

• 8

• -8

Multiple Choice

0 - 7 =

• 0

• 7

• -7

• 1

Multiple Choice

-1 - 5 =

• 4

• 6

• -6

• -4

Open Ended

-2-3

Open Ended

10-(-6)

Poll

How do you feel about adding integers?

• 1 - not good

• 2 - okay, I can do it with help

• 3 - I can do it on my own and get the answer correct most of the time

Poll

How do you feel about subtracting integers?

• 1 - not good

• 2 - okay, I can do it with help

• 3 - I can do it on my own and get the answer correct most of the time