Variables, Expressions, and One-Step Equations

Choose which algebraic expression is correctly written in words.

"-3s"

• the product of negative three and a number

• the quotient of negative three and a number

• the difference of negative three and a number

• the sum of negative three and a number

 $"r\div5"$  

Choose which algebraic expression is correctly written in words.

• the quotient of a number and five

• the product of a number and five

• the difference of a number and five

• the sum of a number and five

 $Friday's\ temperature\ was\ 20\degree\ warmer\ than\ Monday's\ temperature\ t.\ Write\ an\ \exp ression\ for\ Friday's\ temperature.$  

• t + 20

• t - 20

•  $t\times20$  

•  $t\div20$  

Evaluate each expression for r = 6, s = 5, and t = 3.

"s + t"

• 8

• 11

• 9

• 10

Evaluate each expression for r = 6, s = 5, and t = 3.

"sr"

• 30

• 18

• 15

• 56

 $\frac{3}{7}=p-\frac{1}{7}$  

Solve each equation.

•  $\frac{4}{7}$  

•  $\frac{2}{7}$  

•  $-\frac{4}{7}$  

•  $-\frac{2}{7}$  

 $q-0.5=1.5$  

Solve each equation.

• 2

• 1

• -2

• -1

 $3.5=n+4$  

Solve each equation.

• -0.5

• 0.5

• 7.5

• 3.9

 $1\frac{3}{4}=-\frac{1}{4}+w$  

Solve each equation.

• 2

• -2

•  $1\frac{1}{2}$  

•  $-1\frac{1}{2}$  

Luis deposited $500 into his bank account. He now has $4732. How much was in his account before the deposit.