How to Solve Rational Numbers Word Problems

A Step-by-step Guide to Solve Rational Numbers Word Problems

Here is a step-by-step guide to solving rational numbers word problems:

Step 1: Dissect the Problem

Reading the word problem, your primary goal is to understand its essence. Look for key phrases and values that hint towards the type of problem. Jot down the rational numbers involved, and underline or highlight them if you need to. The specifics of the problem will guide your entire solution process.

Step 2: Identify the Unknowns

Now, ascertain what the problem is asking you to solve. This could be a specific value, a relationship, or perhaps even a series of values. Label these unknowns with symbols, most commonly ‘\(x\)’ or ‘\(y\)’, to facilitate further calculations.

Step 3: Translate into Mathematical Language

Convert the word problem into a mathematical equation using the information given. Treat phrases like “is the same as” as equals \((=)\), “added to” as plus \((+)\), “minus” or “less” as subtract \((-)\), “multiplied by” as times \((x)\), “divided by” as division \((÷)\). Remember, rational numbers can be expressed as fractions or decimals.

Step 4: Formulate the Equation(s)

Based on the translation, form the equation or equations necessary to solve the problem. Ensure that each equation correctly represents the situations or conditions described in the problem. If the word problem deals with ratios or proportions, your equation will likely contain fractions.

Step 5: Solve the Equation(s)

Employ your mathematical acumen to solve the formulated equations. Remember, the solution process may involve adding, subtracting, multiplying, or dividing both sides of the equation by the same (non-zero) number. Keep the golden rule of equations in mind: What you do to one side, you must do to the other.

Step 6: Verify Your Solution

Substitute your solution back into the original equations to validate them. If they hold true, congratulations – you’ve found your solution! If not, retrace your steps to spot any errors in formulation or calculation.

Step 7: Answer the Question

Finally, remember to answer the question asked in the word problem. You’ve done all the mathematical heavy lifting; now, it’s just about presenting your answer in a complete sentence or as per the question’s requirements.