Use Variables to Represent Numbers and Write Expressions

For each problem, identify what the variable represents before writing the expression.

Grade 6·21 problems·~25 min·Common Core Math - Grade 6·standard·6-ee-b-6

Work through problems with immediate feedback

Recall / Warm-Up

Which word signals multiplication in a verbal math phrase?

Sum

Difference

Product

Quotient

Which sentence correctly describes the role of $n$ in the expression $5n$ ?

n is a label for the expression.

n is always equal to 5.

n represents a number, and $5n$ means 5 times that number.

n is the answer to a problem.

If $x = 6$ , what is the value of $2x + 1$ ?

261

A bookshelf has $s$ shelves and each shelf holds 8 books. Which expression gives the total number of books?

$s + 8$

$8s$

$8 - s$

$\frac{s}{8}$

Which expression means '7 less than a number $n$ '?

$7 - n$

$n + 7$

$n - 7$

$7n$

Write the expression for 'the cost of $t$ tickets at $9 each.' Which is conventional form?

$t9$

$9t$

$t + 9$

$9 + t$

A taxi charges a flat fee of $3 plus $2 per mile. Which expression gives the total cost for $m$ miles?

$2m$

$3m + 2$

$3 + 2m$

$5m$

Write an algebraic expression for 'five more than twice a number $x$ ': ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ .

When $x = 4$ , the value is ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ .

expression:

value when x=4:

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