¿Cuántas Canicas Verdes Más Que Rojas Tiene Roberto?

Dec 3, 2025 by Tom Lembong 53 views

Let's dive into a fun math problem about Roberto and his marbles! We're going to figure out how many more green marbles Roberto has compared to red ones. This is a great way to practice our subtraction skills and get better at understanding word problems. Ready to roll? Let’s break it down step by step.

Understanding the Problem

First, let's make sure we understand what the problem is asking. Roberto starts with a certain number of red marbles, and then his mom gives him some green marbles. The question we need to answer is: How many more green marbles does Roberto have than red marbles? To solve this, we need to compare the number of green marbles to the number of red marbles. This involves a simple subtraction to find the difference between the two quantities. Let's identify the key information:

Roberto has 7 red marbles.
His mom gives him 12 green marbles.

Now that we have all the necessary information, we can set up our equation to solve for the difference. Remember, we want to find out how many more green marbles there are than red marbles. This means we will subtract the number of red marbles from the number of green marbles.

Setting Up the Equation

To find out how many more green marbles Roberto has, we need to set up a simple subtraction equation. We will subtract the number of red marbles from the number of green marbles. The equation looks like this:

Number of green marbles - Number of red marbles = Difference

In Roberto's case, we have:

12 (green marbles) - 7 (red marbles) = ?

This equation will give us the answer to how many more green marbles Roberto has than red marbles. It's a straightforward subtraction problem, and once we solve it, we'll have our answer. Understanding how to set up these types of equations is crucial for solving similar math problems in the future. It helps us organize the information and find the solution more efficiently. So, let's move on to solving the equation and finding out how many more green marbles Roberto has.

Solving the Equation

Now that we have our equation set up, let's solve it: 12 - 7 = ?

To solve this, we simply subtract 7 from 12. You can do this in a few ways. One way is to count backwards from 12: 11, 10, 9, 8, 7, 6, 5. Another way is to think of it like this: 7 + ? = 12. What number do you need to add to 7 to get 12? The answer is 5.

So, 12 - 7 = 5.

This means Roberto has 5 more green marbles than red marbles. Easy peasy, right? We took the number of green marbles, subtracted the number of red marbles, and found the difference. This difference tells us how many more green marbles there are compared to red marbles. This is a common type of math problem, and understanding how to solve it can help you with all sorts of real-life situations. For example, you might use this skill to figure out how many more cookies you have than your friend, or how many more pages you've read in a book.

Checking the Answer

It's always a good idea to check our answer to make sure it makes sense. We found that Roberto has 5 more green marbles than red marbles. This means if we add 5 to the number of red marbles, we should get the number of green marbles. Let's try it out:

7 (red marbles) + 5 (difference) = 12

7 + 5 = 12

This is correct! So, we know our answer is accurate. Checking your work is a great habit to get into, as it helps you catch any mistakes and build confidence in your problem-solving skills.

Final Answer and Explanation

The final answer is 5. Roberto has 5 more green marbles than red marbles. We arrived at this answer by subtracting the number of red marbles (7) from the number of green marbles (12). This gave us the difference, which is 5. Remember, the key to solving these types of problems is to first understand what the problem is asking, identify the relevant information, set up the equation correctly, and then solve it. And always remember to check your work to make sure your answer makes sense.

Great job, guys! You've successfully solved a math problem about Roberto and his marbles. Now you know how to compare two quantities and find the difference between them. Keep practicing these skills, and you'll become a math whiz in no time!

Why This Problem Matters

You might be wondering, why is this type of problem important? Well, understanding how to compare quantities and find differences is a fundamental skill that we use in many aspects of our lives. Here are a few examples:

Budgeting: When you're managing your money, you might want to know how much more money you have this month compared to last month.
Cooking: If a recipe calls for 2 cups of flour and you only have 1 cup, you need to know how much more flour you need to add.
Shopping: When you're shopping, you might want to compare the prices of two different items to see which one is cheaper.
Sports: In sports, we often compare scores to see which team is winning and by how much.

These are just a few examples, but the point is that the ability to compare quantities and find differences is a valuable skill that can help you in many different situations. By practicing these types of problems, you're not just learning math, you're also developing important life skills.

Making it More Challenging

If you're feeling confident with this problem, here are a few ways to make it more challenging:

Add more colors: What if Roberto also had 8 blue marbles? How many more green marbles would he have than blue marbles?
Change the numbers: What if Roberto's mom gave him 20 green marbles instead of 12? How would that change the answer?
Combine operations: What if Roberto gave 3 red marbles to his friend? How many marbles would he have in total then?

By changing the numbers and adding more steps to the problem, you can make it more complex and challenging. This is a great way to continue developing your math skills and building your confidence.

Tips for Solving Similar Problems

Here are a few tips to keep in mind when solving similar problems:

Read the problem carefully: Make sure you understand what the problem is asking before you start trying to solve it.
Identify the key information: What information do you need to solve the problem? Write it down.
Set up the equation correctly: Make sure you're using the correct operation (addition, subtraction, multiplication, or division) and that you're putting the numbers in the right order.
Solve the equation: Use your math skills to solve the equation and find the answer.
Check your answer: Does your answer make sense? If not, go back and check your work.

By following these tips, you can increase your chances of solving similar problems correctly. And remember, practice makes perfect! The more you practice, the better you'll become at solving math problems.

Conclusion

We've had a great time solving this math problem about Roberto and his marbles. We learned how to compare two quantities and find the difference between them. We also learned why this skill is important and how it can help us in many different situations. Keep practicing your math skills, and you'll be amazed at what you can accomplish! Remember, math is not just about numbers and equations, it's about problem-solving and critical thinking. And these are skills that will benefit you throughout your life.