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Big Ideas Math: Modeling Real Life, Grade 6
BI
Big Ideas Math: Modeling Real Life, Grade 6 View details
2. Solving Equations Using Addition or Subtraction
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Exercise 11 Page 256

Pay close attention to the order of operations.

25

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

Let's see the given expression. 6+2^3 *3 -5 We will start by calculating the the cubic power. Let's do it!

Operation Before Simplification After Simplification
Calculate power 6+2^3 *3 -5 6+ 8 *3 -5
Multiply 6+ 8 * 3 -5 6+ 24 -5
Add terms 6+ 24 -5 30 -5
Subtract terms 30 - 5 25

The expression is equal to 25.

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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