One-Step Equations Test

What is a variable?

• a letter that represents an unknown value

• a number by itself in an equation

• an operation

• r=5

• r=320

• r=32

• r=48

• a=17

• a=11

• a=42

• p=45

• p=5

• p=12

• p=18

• k=76

• k=18

• k=1363

• k=1.62

The opposite of addition is ​ (a)   .

The opposite of multiplication is ​ (b)   .

• subtraction
• division