Solve: 2(3 + ½×8) - Order of Operations with Mixed Numbers

2(3+128)= 2\cdot(3+\frac{1}{2}\cdot8)=

❤️ Continue Your Math Journey!

We have hundreds of course questions with personalized recommendations + Account 100% premium

Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:06 Let's solve this expression step by step.
00:10 First, focus on the parentheses. Always solve those first.
00:16 Next, remember to do multiplication and division before addition and subtraction.
00:22 Now, move the product to the top, into the numerator.
00:26 Let's calculate. Eight divided by two.
00:32 Keep using the order of operations to solve the rest.
00:38 And there you have it! That's the solution.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

2(3+128)= 2\cdot(3+\frac{1}{2}\cdot8)=

2

Step-by-step solution

Let's simplify this expression while following the order of operations which states that exponents come before multiplication and division, which come before addition and subtraction, and that parentheses come before all of these,

We will start by simplifying the expression in parentheses, since multiplication comes before addition, we will first perform the multiplication in the expression, while remembering that multiplying by a fraction means multiplying by the fraction's numerator, then we will perform the division of the fraction (by reducing it), we will complete simplifying the expression in parentheses by performing the addition within them:

2(3+128)=2(3+182)=2(3+)=2(3+4)=27 2\cdot(3+\frac{1}{2}\cdot8)= \\ 2\cdot(3+\frac{1\cdot8}{2})= \\ 2\cdot(3+\frac{\not{8}}{\not{2}})= \\ 2\cdot(3+4)= \\ 2\cdot7 \\ We will finish simplifying the given expression and perform the remaining multiplication:

27=14 2\cdot7= \\ 14 Therefore the correct answer is answer C.

3

Final Answer

14 14

Practice Quiz

Test your knowledge with interactive questions

\( 20\div(4+1)-3= \)

🌟 Unlock Your Math Potential

Get unlimited access to all 18 The Order of Operations questions, detailed video solutions, and personalized progress tracking.

📹

Unlimited Video Solutions

Step-by-step explanations for every problem

📊

Progress Analytics

Track your mastery across all topics

🚫

Ad-Free Learning

Focus on math without distractions

No credit card required • Cancel anytime

More Questions

Click on any question to see the complete solution with step-by-step explanations