IXL - Identify mistakes involving the order of operations (Algebra 1 practice)

Tisha tried to evaluate an expression. Here is her work:

490

–

Step 1

490

–

Step 1

Step 2

–

Step 2

Step 3

–

Step 3

Step 4

Step 5

264

Step 5

Is Tisha's work correct?

No, Tisha made a mistake going from Step 1 to Step 2. Tisha should have multiplied 49 and 9 before dividing. The order of operations says to multiply before you divide.

No, Tisha made a mistake going from Step 3 to Step 4. Tisha should have multiplied 2 and 3 before subtracting. The order of operations says to multiply before you subtract.

Yes, Tisha's work is correct.

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Francesca tried to evaluate an expression. Here is her work:

(

)

–

Step 1

(

)

–

Step 1

Step 2

–

Step 2

Step 3

Step 4

Is Francesca's work correct?

key idea

solution

Looking for more? Try these:

Lesson: Order of operations

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Not feeling ready yet? These can help:

A.9Evaluate numerical expressions involving integers

H.6Identify mistakes involving the order of operations

Lesson: Order of operations

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