Modeling add integers with counters

Which addition equation matches the problem modeled below? (Yellow is positive and Red is negative)

• -2 + -4 = -6

• 2 + -4 = -2

• 4 + 2 = 6

Tags

CCSS.7.NS.A.1C

• 4 + 1 = 5
• 4 - (-1) = 5
• 4 + -1 = 3

Tags

CCSS.7.NS.A.1B

Which counter set models the expression -6 + 6?

• 
• 
• 
• 

Tags

CCSS.7.NS.A.1C

Use the counters to find the sum of the integers. 

• -5
• -7
• 5
• 7

Tags

CCSS.7.NS.A.1C

Use the counters to find the sum of the integers. 

• 17
• -2
• -1
• -17

Tags

CCSS.7.NS.A.1C