Adding and Subtracting Rational Numbers

-2.61 + (-6.88)

• 9.49
• -9.49
• 4.27
• -4.27

Tags

CCSS.7.NS.A.1C

9 + -6.73

• 2.27
• -2.27
• 15.73
• -15.73

Tags

CCSS.7.NS.A.1C

2/4 + -5/4

• -7/4
• 3/4
• -3/4
• -7/8

Tags

CCSS.7.NS.A.1C

Add: -3.6 + 7.5

• -11.1

• 11.1

• -4.9

• 3.9

Tags

CCSS.7.NS.A.1C

When adding rational numbers with the same sign, you must:

• Subtract and keep the sign of the biggest number

• Add together and keep the sign

• Keep, change, flip

• Add the opposite

Tags

CCSS.7.NS.A.1C

When adding rational numbers with different signs, you must:

• Subtract and keep the sign of the biggest number

• Add together and keep the sign

• Keep, change, flip

• Add the opposite

Tags

CCSS.7.NS.A.1C

• -1/16
• -1/8
• -3/4
• 3/4

Tags

CCSS.7.NS.A.1C

When you add opposites, what do you get?

• 0
• A negative number
• Attraction
• You cannot add opposites

Tags

CCSS.7.NS.A.1B

-2 + 4 

• -2
• 2
• 0
• -4

Tags

CCSS.7.NS.A.1C

3 + -7

• 10
• 4
• -10
• -4

Tags

CCSS.7.NS.A.1C