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Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
2. Dividing Integers
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Exercise 33 Page 60

Pay close attention to the order of operations.

4

Practice makes perfect

According to the order of operations, expressions inside parentheses are evaluated first, followed by exponents, then multiplication and division, and finally addition and subtraction are evaluated last. We can use the acronym PEMDAS to help us remember the correct order!

pemdas
For the given expression, we should first calculate the product and the division before finally adding them both. 24÷ (- 4)+(- 2)* (- 5) Let's do it!

Operation Before Simplification After Simplification
Multiply 24÷ (- 4)+( - 2)* ( - 5) 24÷ (- 4)+ 10
Divide 24÷ ( - 4)+10 - 6+10
Add Terms - 6+ 10 4

The expression is equal to 4.

Alternative Solution

 Using a Calculator
We can also evaluate this expression using a calculator. To do so, we type it as shown below.

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arrow_right Self-Assessment for Problem Solving p.58
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