Add, Subtract, Multiply, and Divide Rational Numbers

Add. 
-0.94 + -1.65

• -2.59

• -0.71

• 2.59

• 0.71

Tags

CCSS.7.NS.A.1C

⁸/₁₅  +  (-⁶/₁₅)

• 14/15

• -2/15

• 2/15

• -14/15

Tags

CCSS.7.NS.A.1C

-9+ -6.73

• 2.27

• -2.27

• 15.73

• -15.73

Tags

CCSS.7.NS.A.1C

Simplify: (-8.6) + 7.2

• -14.9

• -1.4

• 1.4

• 14.9

Tags

CCSS.7.NS.A.1C

15 - 21

• 6

• 26

• -6

• -26

Tags

CCSS.7.NS.A.1C

Find the difference of 7/10 - 9/10

• 5

• -1/5

• -8/5

• 8/5

Tags

CCSS.7.NS.A.1C

Find  -6.23 - 7.5

• 13.73

• 1.3

• -1.2

• -13.73

Tags

CCSS.7.NS.A.1C

(-9)(-8)

• -72

• 72

• 81

• -81

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Multiply
(5) • (–9) • (–2)

• 90

• -45

• -90

• 47

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

−0.2 x 0.8

• 16

• −0.16

• 0.016

• 1.6

• 0.16

Tags

CCSS.7.NS.A.2A