IXL | Evaluate variable expressions with decimals, fractions, and mixed numbers

Find the value of the expression

0.7 + t

for t = 7.

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Learn with an example

question

Find the value of the expression

for u =

Write your answer as a fraction or as a whole or mixed number.

key idea

A variable is a letter that represents an unknown number.

An expression is a group of numbers, symbols, and variables that represents another number.

solution

Replace the variable u with

↓

Write both numbers as improper fractions.

Write the reciprocal of the divisor and change the division sign to a multiplication sign.

Multiply:

Simplify the answer:

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Lesson: Evaluating expressions

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Teacher tools

Work it out

Not feeling ready yet? These can help:

Y.4Evaluate variable expressions with whole numbers

J.3Evaluate numerical expressions involving decimals

N.3Evaluate numerical expressions involving fractions

Lesson: Evaluating expressions

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