Multiplying and dividing rational numbers

 $5\ \frac{1}{4\ }\div\ 2\ \frac{1}{7}=$  

What is the first thing you should do to solve this equation?

• copy, change, flip

• divide the whole numbers

• change the mixed numbers to improper fractions

• find a common denominator

Tags

CCSS.7.NS.A.2C

Which is -(-1/5)?

• -5/1

• 5/1

• -1/5

• 1/5

Tags

CCSS.7.NS.A.2C

If a=b then b=a

• Reflexive Property
• Commutative Property of Multiplication
• Symmetric Property
• Associative Property of Addition

Tags

CCSS.7.NS.A.2C

• 2

Tags

CCSS.7.NS.A.2C

5 divided by the quotient of 4 divided by 9

• (4 ÷ 9) ÷ 5 
• 5 ÷ (9 ÷ 4) 
• 5 ÷ (4 ÷ 9)
• 9 ÷ (4 ÷ 5) 

Tags

CCSS.7.NS.A.2C

-18/(-2)/3

Tags

CCSS.7.NS.A.2C

Evaluate the expression: $-3.5\left(7+5\right)$ . 

• -42

• 42

• 29.5

• 24.5

Tags

CCSS.7.NS.A.2C

Use properties to evaluate 1/3 (-15 / 1/2) 1/4

• 5/8

• 5/2

• -5/2

• -5/8

Tags

CCSS.7.NS.A.2C

What does the word "flip" tell you to do in "Keep, Change, Flip" for dividing fractions?

• change the places of the numbers in the numerator and the denominator for the first fraction

• change the places of the numbers in the numerator and the denominator for the second fraction

• change the places of the numbers in the numerator and the denominator for both fractions

• change the division sign between the fractions

Tags

CCSS.7.NS.A.2C

 $Solve:\ \ \ \ \ 2\frac{1}{2}\div\frac{1}{4}\ =\$  

• 10

•  $2\ \frac{1}{2}$  

•  $\frac{5}{8}$ 

•  $\frac{8}{4}$  

Tags

CCSS.7.NS.A.2C