Mastering Order Of Operations: Solve (19/72) - (1/3)^2 + (11/36)

by Andrew McMorgan 65 views

Hey math enthusiasts! Ever stare at a jumble of numbers and symbols and wonder where to even begin? We’ve all been there, guys. It’s like trying to assemble IKEA furniture without the instructions – chaos! But fear not, because today we’re diving deep into the magical world of the order of operations. This isn't just some dusty old rule; it's your secret weapon for tackling complex math expressions like a pro. We're going to break down the expression 1972βˆ’(13)2+1136\frac{19}{72}-\left(\frac{1}{3}\right)^2+\frac{11}{36} step-by-step, using the tried-and-true PEMDAS (or BODMAS, if you prefer) rules. Get ready to flex those math muscles, because by the end of this, you'll be solving these types of problems with confidence and maybe even a little bit of flair. So, grab your calculators, a notebook, and let's get this mathematical party started!

Unpacking the Expression: Your First Look

Alright, let’s get our eyes on the prize: the expression 1972βˆ’(13)2+1136\frac{19}{72}-\left(\frac{1}{3}\right)^2+\frac{11}{36}. Before we jump into the nitty-gritty of calculations, it’s crucial to understand what we’re dealing with. This expression involves fractions, subtraction, addition, and an exponent. Without a clear set of rules, you could get wildly different answers, and trust me, nobody wants that! The order of operations is our guiding star here. It’s a set of conventions that dictate the sequence in which mathematical operations should be performed to ensure a unique and correct result. You've probably heard of PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right). Alternatively, some folks use BODMAS: Brackets, Orders (powers and square roots), Division and Multiplication (from left to right), and Addition and Subtraction (from left to right). Both acronyms represent the same hierarchy. So, the first thing we need to tackle in our expression 1972βˆ’(13)2+1136\frac{19}{72}-\left(\frac{1}{3}\right)^2+\frac{11}{36} is anything inside Parentheses or Brackets. In our case, we have (13)2\left(\frac{1}{3}\right)^2. While the parentheses themselves don't contain further operations, they enclose the base of our exponent. This is our starting point for applying the order of operations. It’s all about breaking down the complex into manageable chunks, and identifying the first chunk is key to a smooth mathematical journey. So, let’s roll up our sleeves and handle that exponent first, because that’s what the rules are telling us to do! This initial step sets the stage for everything that follows, ensuring we’re on the right track.

Step 1: Tackling the Exponent – The "Power" of Calculation!

Okay, team, let's get down to business with the first part of our expression, as dictated by the almighty order of operations: the Exponent. Remember PEMDAS? Parentheses first, then Exponents. In our expression 1972βˆ’(13)2+1136\frac{19}{72}-\left(\frac{1}{3}\right)^2+\frac{11}{36}, the exponent is applied to the fraction 13\frac{1}{3}. So, we need to calculate (13)2\left(\frac{1}{3}\right)^2. What does squaring a fraction mean? It means multiplying the fraction by itself. So, \left(\frac{1}{3} ight)^2 = \frac{1}{3} \times \frac{1}{3}. When we multiply fractions, we multiply the numerators together and the denominators together. The top numbers (numerators) are 1 and 1, and the bottom numbers (denominators) are 3 and 3. So, 1Γ—1=11 \times 1 = 1 and 3Γ—3=93 \times 3 = 9. This gives us a new fraction: 19\frac{1}{9}.

Now, our original expression, \frac{19}{72}-\left(\frac{1}{3} ight)^2+\frac{11}{36}, transforms into 1972βˆ’19+1136\frac{19}{72}-\frac{1}{9}+\frac{11}{36}. See? We’ve simplified a part of the expression, making it less intimidating. This is the beauty of following the order of operations – it breaks down a complex problem into simpler, sequential steps. It's like peeling an onion; you tackle one layer at a time until you get to the core.

Pro-Tip Alert! Always double-check your exponent calculations. Squaring a fraction is straightforward, but with higher powers or more complex bases, errors can creep in easily. Take your time, ensure you're multiplying correctly, and remember that (ab)n=anbn(\frac{a}{b})^n = \frac{a^n}{b^n}. In our case, (13)2=1232=19(\frac{1}{3})^2 = \frac{1^2}{3^2} = \frac{1}{9}. This step is fundamental, and getting it right sets a solid foundation for the next stages of our calculation. Keep up the great work, everyone!

Step 2: Conquering Multiplication and Division – Left to Right!

Moving on, guys, after dealing with parentheses and exponents, the next step in our PEMDAS journey is Multiplication and Division. We perform these operations as they appear from left to right. Let's look at our updated expression: 1972βˆ’19+1136\frac{19}{72}-\frac{1}{9}+\frac{11}{36}. In this particular expression, we don't have any multiplication or division operations left to perform. That's right, sometimes the steps are simpler than you expect! If we had something like 1972Γ·19\frac{19}{72} \div \frac{1}{9}, we would have tackled that before moving on to addition and subtraction. But since there are no M or D operations standing between our numbers and the final result, we can confidently skip this step and move straight to the final frontier: Addition and Subtraction.

It’s important to remember that even if a step seems