Operations on rational numbers

Find the product.
 $-\frac{1}{2}\ \times\ \frac{5}{9}$  

•  $\frac{1}{18}$  

•  $\frac{5}{18}$  

•  $-\frac{5}{18}$  

•  $-\frac{1}{18}$  

Tags

CCSS.7.NS.A.2A

Jackson solved the following problem. Did Jackson multiply correctly? Explain....

5 - 1/2 x 2/3 = 3-2/3

• NO

• YES

Tags

CCSS.7.NS.A.2A

98/100 / 98/100

• 1

• 2/9

• 8/0

• 1/1

Tags

CCSS.7.NS.A.2A

Which product is positive?

• (- 1/3)(- 2/3)(1/4)(1/9)

• (- 2/5)(7/8)(- 9/10)(- 1/6)

• (2/5)(8/9)(1/3)(- 2/7)

• (- 2/5)(- 8/9)(3/4)(- 9/10)

Tags

CCSS.7.NS.A.2A

A negative times a positive = a _____

• postive

• negative

• fraction

• mixed number

Tags

CCSS.7.NS.A.2A

What is a/b . . . when a = -88 . . . and b = 2?

• -78

• -44

• 44

• 78

Tags

CCSS.7.NS.A.2A

• -16.8

• -1.68

• -0.168

• -168

Tags

CCSS.7.NS.A.2A

When multiplying or dividing, which of the following would have a positive answer?

• Both rational numbers are negative

• (-1)(8)

• When one rational number is positive and one rational number is negative

• (-5)(-5)

Tags

CCSS.7.NS.A.2A

 $-12\ \frac{2}{3}\cdot7\ \frac{1}{2}$  

• -85

• -95

•  $-92\ \frac{1}{2}$  

•  $-84\ \frac{1}{3}$  

Tags

CCSS.7.NS.A.2A

-3.14 x -3.6

• 11.304

• -11.304

• 113.04

• -1.1304

Tags

CCSS.7.NS.A.2A