QUE PORCENTAJE ES UN NÚMERO DE OTRO Super Fácil - Para principiantes

Summary

In this video, Daniel Carrión explains the concept of percentages, demonstrating how to calculate what percentage one number is of another using simple steps. He introduces the method of using two columns (one for quantity and one for percentage) and the rule of three to solve percentage problems. Through clear examples like calculating what percentage 30 is of 75, 54 of 150, and 50 of 180, Daniel shows viewers how easy and effective this method is. He encourages viewers to practice with exercises, like and share the video, and subscribe for more content.

Takeaways

• 😀 The percentage symbol represents a quantity as a fraction out of 100 parts.
• 😀 The term 'por ciento' means 'per hundred' in Spanish, which is commonly used to describe percentages.
• 😀 To calculate percentages, you can set up two columns: one for quantity (100%) and one for the unknown percentage.
• 😀 Using the rule of three, you multiply the numbers diagonally and divide the result by the remaining number to find the percentage.
• 😀 Example 1: 30 is 40% of 75, which was calculated by setting up a rule of three.
• 😀 Example 2: 54 is 36% of 150, derived by multiplying 54 by 100 and dividing the result by 150.
• 😀 Example 3: 50 is 27.77% of 180, calculated by the same method of multiplication and division.
• 😀 The rule of three is a simple and effective method to calculate percentages in everyday situations.
• 😀 The key to solving percentage problems is understanding how to set up the formula correctly.
• 😀 The speaker encourages viewers to engage with the content by commenting, liking, and subscribing for more educational videos.

Q & A

What is the definition of a percentage in mathematics?

A percentage is a mathematical symbol that represents a quantity expressed as a fraction of 100 equal parts. It is also commonly referred to as 'per cent,' meaning 'out of each 100 units.'

How do you calculate what percentage one number is of another?

To calculate the percentage, you use a simple proportion (rule of three). You set up two columns: one for the quantity (which is considered 100%) and one for the percentage. Then, solve using cross-multiplication.

In the first example, how do you calculate what percentage 30 is of 75?

In the first example, we set up two columns: 75 in the quantity column (representing 100%), and 30 in the percentage column. Using a rule of three, we multiply 30 by 100 to get 3000, then divide 3000 by 75 to get 40, which means 30 is 40% of 75.

What is the result of the calculation in the first example?

The result is that 30 is 40% of 75.

In the second example, what percentage is 54 of 150?

For the second example, we set 150 as the 100% value. Using the rule of three, multiplying 54 by 100 gives 5400. Dividing 5400 by 150 results in 36, meaning 54 is 36% of 150.

How do you set up the calculation in the second example?

In the second example, we create two columns: one for the quantity (150 as 100%) and one for the unknown percentage (54). Then, we use the rule of three to calculate the percentage.

What percentage does 50 represent of 180 in the third example?

In the third example, 50 is 27.77% of 180. This is calculated by setting 180 as the 100% value, multiplying 50 by 100 to get 5000, and then dividing 5000 by 180.

How do you approach the percentage calculation in the third example?

In the third example, we use two columns: 180 as the 100% value and 50 as the unknown percentage. Then, we apply the rule of three to find the percentage.

Why is it important to understand how percentages work?

Understanding percentages is crucial for interpreting various real-life situations, such as calculating discounts, tax rates, or determining the proportion of one quantity relative to another.

What should you do if you want to calculate the percentage of a number without using a calculator?

You can manually calculate the percentage by setting up the rule of three using simple multiplication and division. You can break down the process into smaller steps, multiplying the numbers that are diagonally across in the proportion and then dividing by the remaining number.