IXL | Write variable expressions: word problems

Steven had already read

pages of his book. During the afternoon, he read 15 more pages. Choose the expression that shows how many pages Steven has read in all.

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Learn with an example

At the library, Alice checked out 3 paperback books and

hardcover books. Choose the expression that shows how many books Alice checked out in all.

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A variable is a letter that represents an unknown number.

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

Look for a pattern.

Try

At the library, Alice checked out 3 paperback books and 2 hardcover books.

which is 5.

Try

At the library, Alice checked out 3 paperback books and 3 hardcover books.

which is 6.

Try

At the library, Alice checked out 3 paperback books and 4 hardcover books.

which is 7.

The pattern shows that in order to find how many books Alice checked out in all, you always add

to 3. This is the correct expression:

Looking for more? Try these:

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