Not multiplying the whole numbers together

Oct 13, 2025 by wbrum.org 55 views

When it comes to multiplying mixed numbers, it's essential to understand the concept and the steps involved. In this article, we'll delve into the world of mixed numbers and explore how to multiply them correctly.

What are Mixed Numbers?

A mixed number is a combination of a whole number and a fraction. It's written in the form of a b/c, where a is the whole number and b/c is the fraction. For example, -3 1/3 and -8 7/10 are both mixed numbers.

Multiplying Mixed Numbers: The Basics

To multiply mixed numbers, we need to follow a specific set of steps. Here's a step-by-step guide to help you understand the process:

Step 1: Multiply the Whole Numbers

The first step is to multiply the whole numbers together. In this case, we have -3 and -8. Multiplying these two numbers gives us 24.

Step 2: Multiply the Fractions

Next, we need to multiply the fractions together. To do this, we multiply the numerators (1 and 7) and the denominators (3 and 10) separately. This gives us (1 * 7) / (3 * 10) = 7/30.

Step 3: Combine the Results

Now that we have the product of the whole numbers and the product of the fractions, we need to combine them. To do this, we multiply the whole number product by the fraction product. This gives us 24 * 7/30 = 168/30.

Step 4: Simplify the Result

The final step is to simplify the result. To do this, we need to find the greatest common divisor (GCD) of the numerator and the denominator. In this case, the GCD of 168 and 30 is 6. Dividing both the numerator and the denominator by 6 gives us 28/5.

The Final Answer

So, what is the product of -3 1/3 and -8 7/10? The correct answer is 28/5, which can also be written as 5 3/5.

Conclusion

Multiplying mixed numbers can be a challenging task, but with the right steps and a clear understanding of the concept, it's achievable. By following the steps outlined in this article, you'll be able to multiply mixed numbers with ease.

Common Mistakes to Avoid

When multiplying mixed numbers, it's essential to avoid common mistakes. Here are a few to watch out for:

Not multiplying the whole numbers together: Make sure to multiply the whole numbers together before multiplying the fractions.
Not multiplying the fractions together: Don't forget to multiply the numerators and denominators of the fractions together.
Not combining the results: Remember to multiply the whole number product by the fraction product.
Not simplifying the result: Don't forget to simplify the result by finding the GCD of the numerator and the denominator.

Practice Problems

To practice multiplying mixed numbers, try the following problems:

-2 1/2 and -6 3/4
3 1/3 and 2 2/5
-4 3/5 and -9 1/2

Real-World Applications

Multiplying mixed numbers has real-world applications in various fields, including:

Cooking: When measuring ingredients, you may need to multiply mixed numbers to get the correct amount.
Building: When working with fractions of a unit, you may need to multiply mixed numbers to get the correct measurement.
Science: When working with fractions of a unit, you may need to multiply mixed numbers to get the correct measurement.

Conclusion

In our previous article, we explored the concept of multiplying mixed numbers and provided a step-by-step guide on how to do it. However, we understand that sometimes, it's easier to learn through questions and answers. In this article, we'll address some common questions and provide answers to help you better understand multiplying mixed numbers.

Q: What is the product of 2 1/3 and 3 2/5?

A: To find the product, we need to multiply the whole numbers together and the fractions together. Multiplying the whole numbers gives us 6. Multiplying the fractions gives us (12)/(35) = 2/15. Then, we multiply the whole number product by the fraction product, which gives us 6 * 2/15 = 12/15. Simplifying the result, we get 4/5.

Q: How do I multiply a negative mixed number by a positive mixed number?

A: When multiplying a negative mixed number by a positive mixed number, the result will be negative. For example, if we multiply -3 1/3 by 2 2/5, we get a negative result. To find the product, we multiply the whole numbers together and the fractions together. Multiplying the whole numbers gives us -6. Multiplying the fractions gives us (12)/(35) = 2/15. Then, we multiply the whole number product by the fraction product, which gives us -6 * 2/15 = -12/15. Simplifying the result, we get -4/5.

Q: Can I multiply mixed numbers with different denominators?

A: Yes, you can multiply mixed numbers with different denominators. To do this, you need to find the least common multiple (LCM) of the denominators and then convert both fractions to have the LCM as the denominator. For example, if we want to multiply 2 1/3 by 3 2/5, we need to find the LCM of 3 and 5, which is 15. Then, we convert both fractions to have 15 as the denominator. This gives us 7/15 and 22/15. Multiplying the whole numbers together and the fractions together, we get 6 * 22/15 = 132/15. Simplifying the result, we get 44/5.

Q: How do I multiply a mixed number by a fraction?

A: To multiply a mixed number by a fraction, you need to multiply the whole number by the fraction and then multiply the fraction by the fraction. For example, if we multiply 2 1/3 by 1/2, we get 2 * 1/2 = 1 and 1/3 * 1/2 = 1/6. Then, we add the results together, which gives us 1 + 1/6 = 7/6.

Q: Can I multiply mixed numbers with decimals?

A: Yes, you can multiply mixed numbers with decimals. To do this, you need to convert the decimal to a fraction and then multiply the mixed number by the fraction. For example, if we want to multiply 2 1/3 by 0.5, we need to convert 0.5 to a fraction, which is 1/2. Then, we multiply the mixed number by the fraction, which gives us 2 * 1/2 = 1 and 1/3 * 1/2 = 1/6. Then, we add the results together, which gives us 1 + 1/6 = 7/6.

Q: How do I multiply a mixed number by a percentage?

A: To multiply a mixed number by a percentage, you need to convert the percentage to a decimal and then multiply the mixed number by the decimal. For example, if we want to multiply 2 1/3 by 25%, we need to convert 25% to a decimal, which is 0.25. Then, we multiply the mixed number by the decimal, which gives us 2 * 0.25 = 0.5 and 1/3 * 0.25 = 1/12. Then, we add the results together, which gives us 0.5 + 1/12 = 6/12.

Conclusion

Multiplying mixed numbers can be a challenging task, but with practice and patience, you'll become proficient in no time. Remember to follow the steps outlined in this article and to avoid common mistakes. If you have any more questions or need further clarification, don't hesitate to ask.