Operations on rational numbers

Evaluate the expression 7/q  for q = 7. Simplify your answer.

• 7/7
• 1
• 14
• 0

Simplify the rational numerical expression: 2/5 * 3/8 / 4/15

• 1/3

• 5/16

• 7/20

• 3/10

In the phrase "keep, change, flip," "keep" means...

• you keep dividing the number in half until it is as small as you can get it

• you keep the operation (in this case the division sign) the same

• you keep the number you are dividing by another number (the dividend) the same

• you keep the number you are dividing by (the divisor) the same

 $6\frac{1}{8}\div\frac{3}{16}\ =\frac{48}{8}\times\frac{16}{3}$  Determine whether this equation is true or false.

• True 

• False

-3/4 x + 1/2 = 3/8

• x = -1/6
• x = 3/32
• x = 1/6
• x = -3/32

Original expression: $12\div\left(y+4\right)$  
Which expression is NOT equivalent?

Find the impostor!

•  $\left(y+4\right)\div12$  

•  $12\div\left(4+y\right)$  

•  $12\div\left(y--4\right)$  

•  $\frac{12}{y+4}$  

 $-3\frac{3}{4}\ \div\ -10$  

• 37 1/2

• -3/8

• 3/8

• -37 1/2

Match each word with its definition.

• Distributive Property

• For any nonzero number a, this value would be 1/a. For any fraction a/b would be b/a. Also called the multiplicative inverse of that number.

• Mean

• Multiplying each term in a sum or difference by a common factor does not change the value of the expression. For any numbers a, b, and c. a(b + c) = ab + ac

• Reciprocal

• The sum of a set of values divided by the number of values. This is often called the average

Find the missing side. Write answer as a simplified radical.

• A

• B

• C

• D

How many spaces do you move the decimal point before you divide?

 $2.33\ \div\ 1.345$  

• 3

• 2

• 4

• 1