Algebraic expressions

A number whose value we do not know is called an __________.

Letters that represent unknowns are called ________ symbols.

• sum

• difference

• product

• quotient

Which of the following are algebraic expressions?

• 23+3

Organize these options into the right categories.

Groups:

(a) Algebraic expressions

,

(b) Expressions

• 8-p

• 14f

• x+4

• 21-7

Which operation is represented by 2x?

• addition

• subtraction

• multiplication

• division

Which of the following expressions will give a difference of 4 and 16?

• 4+16

• 16-4

What do you call the result of multiplication?

• sum

• difference

• product

• quotient

Peter has y 20-dollar notes. Which expression can be used to express the amount of money that Peter has?

• $(20+y)

• $(20-y)

• $20y