IXL | Use numerical expressions to solve multi-step word problems

The Ridgewood High marching band is preparing for the first football game of the year. The band director has the students form a drum section with 2 rows of bass drummers and 5 rows of snare drummers. Each row has 10 drummers.

Which expression tells you how many drummers are in the drum section?

(

)

How many drummers are in the drum section?

drummers

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Learn with an example

question

A yoga instructor laid out 32 mats for a class in the park. As more and more students arrive, she realizes this will not be enough. So, she lays out 3 more rows of mats with 8 mats in each row.

Which expression tells you how many yoga mats there are in all?

(

)

How many yoga mats are there in all?

yoga mats

key idea

To evaluate an expression with multiple operations, you can follow the order of

operations:

Perform operations inside parentheses.
Multiply and divide from left to right.
Add and subtract from left to right.

solution

First, find which expression tells you how many yoga mats there are in all.

The yoga instructor lays out 3 extra rows of mats with 8 mats in each row. Multiply to find the number of extra mats.

3	×	8

rows		mats per row

The yoga instructor originally laid out 32 mats. Add the number of extra mats to find the total number of yoga mats.

32	+	3 × 8

original mats		extra mats

Now, evaluate the expression to find how many yoga mats there are in all.

First, multiply.

Then, add.

There are 56 yoga mats in all.

Looking for more? Try this:

$Confetti$

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Teacher tools

Work it out

Not feeling ready yet? These can help:

H.2Write numerical expressions: two operations

H.4Evaluate numerical expressions with parentheses

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