Adding integers with counters and number lines

Use the number line to find the sum.
3 + (-12) =

• -9
• 9
• -15
• 15

Tags

CCSS.7.NS.A.1B

What equation is modeled?

• 15 + 25 = -10
• 15 + -25 = -10
• -10 + 15 = -10
• -25 + 15 = -10

Tags

CCSS.7.NS.A.1B

• 7
• 5
• -7
• -5

Tags

CCSS.7.NS.A.1C

Which number is an example of an integer?

• 1/8

• .39

• -7

• 8.3

• -3 +7 = 10
• 7 + (-3) = 4
• 7 + (-10) = -3
• 10 + (-3) = 7

Tags

CCSS.7.NS.A.1B

• -5 + 3 = -2
• 5 + (-3) = 2
• 5 + 3 = 8
• -5 + (-3) = -8

Tags

CCSS.7.NS.A.1B

• 4 + 3 = 1
• 4 + (-3) = 1
• -4 + 3 = -1
• -4 + (-3) = -1

Tags

CCSS.7.NS.A.1B

Look at the number line.

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

Tags

CCSS.7.NS.A.1B

-2 + (-8)

• -6
• 6
• -10
• 10

Tags

CCSS.7.NS.A.1C

If you are adding 2 negative numbers, will your answer be positive or negative?

• negative
• positive

Tags

CCSS.7.NS.A.1C