Chapter 6: Problem 2
Write \(54.8 \%\) as a decimal. (a) 0.548 (b) 5.48 (c) 0.0548 (d) 5480
Short Answer
Expert verified
54.8% as a decimal is 0.548, thus the answer is (a) 0.548.
Step by step solution
01
Understanding Percentages
The symbol '%' stands for 'per hundred'. Therefore, when we say 54.8%, it means 54.8 per every 100 units.
02
Conversion to Decimal
To convert a percentage to a decimal, we divide the percentage value by 100. This is because 'per cent' means 'per hundred'. Therefore, we calculate 54.8% by dividing 54.8 by 100.
03
Performing the Division
When we divide 54.8 by 100, we shift the decimal point two places to the left. Thus, \[54.8 \div 100 = 0.548\].
04
Matching the Answer with Options
The correct answer after conversion is 0.548. We compare this result with the provided options: (a) 0.548, (b) 5.48, (c) 0.0548, (d) 5480. The correct option is (a) 0.548.
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Converting Percentages to Decimals
Converting percentages to decimals is a vital skill in mathematics that simplifies calculations and helps us understand proportions more clearly. Let's demystify this process and make it easy for everyone.
When you see a percentage, such as 54.8%, it represents a part of a whole. The term 'percent' literally means "per hundred." Therefore, 54.8% actually means 54.8 out of 100 units. To convert it into a decimal, which is a more uniform representation and easier to use in calculations, you need to perform a simple operation: division.
Here's a quick guide on how to do it:
When you see a percentage, such as 54.8%, it represents a part of a whole. The term 'percent' literally means "per hundred." Therefore, 54.8% actually means 54.8 out of 100 units. To convert it into a decimal, which is a more uniform representation and easier to use in calculations, you need to perform a simple operation: division.
Here's a quick guide on how to do it:
- Identify the percentage you need to convert, for example, 54.8%.
- Divide that percentage number by 100 to find its decimal equivalent. This means you are simply moving the decimal point two places to the left.
- So, for 54.8%, you calculate \(54.8 \div 100 = 0.548\).
Decimal Representation
Decimals are an integral part of math that help us express values between whole numbers. Understanding decimal representation can open up a world of precision and clarity in both calculations and everyday scenarios.
Decimals are numbers that are expressed using a dot, known as the decimal point, which separates the whole number part from the fractional part. For instance, in 0.548, the digit 0 represents the whole number part, while 548 represents the fractional part – indicating 548 thousandths.
Here's how decimals bridge the gap between whole numbers:
Decimals are numbers that are expressed using a dot, known as the decimal point, which separates the whole number part from the fractional part. For instance, in 0.548, the digit 0 represents the whole number part, while 548 represents the fractional part – indicating 548 thousandths.
Here's how decimals bridge the gap between whole numbers:
- They allow us to show values less than one clearly, such as 0.5 to represent half.
- Decimals are used to express money amounts, measurements, and precise scores, where fractions might be less readable.
- When you convert a percentage to a decimal, like converting 54.8% to 0.548, you gain a depiction that is more useful in various mathematical operations.
Math Problem Solving
Being adept at problem-solving in math takes practice, but anyone can master it by applying strategic thinking and understanding core concepts.
When faced with a math problem like converting a percentage to a decimal, here's how you can approach it:
When faced with a math problem like converting a percentage to a decimal, here's how you can approach it:
- Understand the problem: Carefully read the question to determine what is being asked. Identify key terms such as 'percentage' in our case.
- Plan your approach: Know which mathematical operations or formulae to use. For converting percentages, knowing to divide by 100 is crucial.
- Execute the solution: Carry out the planned mathematical operations – like moving the decimal point – calmly and systematically.
- Review your work: Always check your final answer against possible options or validate your calculations by reversing the process.