Week 16- Subtracting rational numbers

How do you subtract integers?

• Change to multiplication and use the opposite of the second number.
• Change to addition and use the opposite of the second number.
• Find the opposite of both numbers and then add. 
• Subtract the absolute value of each number.

Tags

CCSS.7.NS.A.1B

How would -9 -(-5) look like as an addition problem?

• -9 + (-5)
• 9 + 5
• -9 + 5
• 9 + (-5)

Tags

CCSS.7.NS.A.1B

-5 - (-17) ... Which addition sentence represents the same problem?

• -5 + 17

• -5 + (-17)

• 5 + (-17)

• 5 + 17

Tags

CCSS.7.NS.A.1C

Rewrite the expression

7 - (-6)

• 7 - 6

• 7 + (-6)

• 7 + 6

• -7 + (-6)

Tags

CCSS.7.NS.A.1B

-3 - 2

• -1
• -5
• 1
• 6

Tags

CCSS.7.NS.A.1C

8 - 10 =

• 2

• -2

• 18

• -18

Tags

CCSS.7.NS.A.1C

7 - (-4) =

• 11

• -11

• 3

• -3

Tags

CCSS.7.NS.A.1C

-4 - 6 =

• -10

• 10

• 2

• -2

Tags

CCSS.7.NS.A.1C

-8 - (-6) = 

• -14
• 14
• -2
• 2

Tags

CCSS.7.NS.A.1C

Look at the number line.

• –2 + 4 =  –2
• –2 + (–4) =  –6
• 4 + (–6) =  –2
• 4 + (–2) =  6

Tags

CCSS.7.NS.A.1B