Algebraic Expressions

The algebraic expression for "Twice the product of m and n" is:

• 2 + m + n

• 2mn

• mn²

• 2(m + n)

Given the expresion 2x - 4y + 5, which of the following is true?

• There are 3 terms, 5 is the constant term and x and y are the pronumerals.

• There are 2 terms, 2x is the constant term and 5 and -4 are the pronumerals.

• There are 2 terms, 5 is the constant term and x and y are the pronumerals.

• This expression is also an equation

In the expression 5a + 3b + 2b - 6, there are how many terms?

• 5

• 4

• 3

• 2

The sum of m and n less 5 can be written as:

• mn - 5

• 5 - (m + n)

• m + n ÷ 5

• m + n - 5

The difference between 5 and t can be written as:

• 5 $\div$  t 

• 5 - t

• 5 + t 

• 5t

A table costs $m. How much does c tables cost?

• $m - c

• $m + c

• $mc

• $m ÷ c

Half of (5m + b) can be written as:

• $\frac{1}{2}\times$ (5m + b)

• 2 x (5m+b)

• 5m + b $\div$ 2

• 5m $\div$ 2 + b

James bought k pens. If the total cost was $m, what was the price of each pen?

• $km

• $ $\frac{k}{m}$

• $ $\frac{\text{m}}{k}$

• $k + m

The algebraic expression mn means:

• the product of m and n

• the sum of m and n

• the difference between m and n

• m and n squared

The algebraic expression 5(m + n) means

• The sum of 5, m and n

• The difference between 5 and (m + n)

• 5 lots of m and then add n

• Add m and n together and multiply the result by 5