Calculating the Initial Payment

Oct 13, 2025 by talynt.org 80 views

Introduction

When purchasing a new bed, Caleb is required to pay a portion of the total cost upfront and the remaining amount upon delivery. In this scenario, we are tasked with determining the amount Caleb pays when he orders the bed. To solve this problem, we need to calculate $\frac{1}{5}$ of the total cost of the bed, which is £400.

Calculating the Initial Payment

To find the amount Caleb pays when he orders the bed, we can use the following formula:

Initial Payment = (Total Cost) × (Fraction Paid Upfront)

In this case, the total cost of the bed is £400, and Caleb pays $\frac{1}{5}$ of the total cost upfront.

Step 1: Convert the Fraction to a Decimal

To make the calculation easier, we can convert the fraction $\frac{1}{5}$ to a decimal. To do this, we divide the numerator (1) by the denominator (5):

$\frac{1}{5}$ = 0.2

Step 2: Multiply the Total Cost by the Decimal Equivalent

Now that we have the decimal equivalent of the fraction, we can multiply the total cost of the bed (£400) by this decimal:

Initial Payment = £400 × 0.2

Performing the Calculation

To find the initial payment, we multiply £400 by 0.2:

Initial Payment = £400 × 0.2 = £80

Conclusion

Therefore, Caleb pays £80 when he orders the bed. This amount represents $\frac{1}{5}$ of the total cost of the bed, which is £400.

Understanding the Concept of Fractions and Decimals

In this problem, we used the concept of fractions and decimals to calculate the initial payment for the new bed. Fractions are used to represent a part of a whole, while decimals are used to represent a fraction as a numerical value. By converting the fraction $\frac{1}{5}$ to a decimal (0.2), we made the calculation easier and more manageable.

Real-World Applications of Fractions and Decimals

Fractions and decimals are used in various real-world applications, such as:

Cooking: Recipes often require fractions or decimals to measure ingredients accurately.
Building: Architects and builders use fractions and decimals to calculate measurements and proportions.
Finance: Financial calculations, such as interest rates and investment returns, often involve fractions and decimals.

Tips for Working with Fractions and Decimals

When working with fractions and decimals, it's essential to:

Understand the concept: Make sure you understand the concept of fractions and decimals and how they are used.
Convert between formats: Be able to convert between fractions and decimals to make calculations easier.
Use a calculator: If necessary, use a calculator to perform calculations involving fractions and decimals.

Conclusion

Q: What is the difference between a fraction and a decimal?

A: A fraction is a way of expressing a part of a whole, while a decimal is a numerical value that represents a fraction. For example, the fraction $\frac{1}{2}$ is equal to the decimal 0.5.

Q: How do I convert a fraction to a decimal?

A: To convert a fraction to a decimal, you can divide the numerator (the top number) by the denominator (the bottom number). For example, to convert the fraction $\frac{1}{2}$ to a decimal, you would divide 1 by 2, which equals 0.5.

Q: How do I convert a decimal to a fraction?

A: To convert a decimal to a fraction, you can express the decimal as a fraction by writing it as a ratio of two numbers. For example, the decimal 0.5 can be expressed as the fraction $\frac{1}{2}$ .

Q: What is the concept of equivalent fractions?

A: Equivalent fractions are fractions that have the same value, but are expressed differently. For example, the fractions $\frac{1}{2}$ and $\frac{2}{4}$ are equivalent because they both represent the same value.

Q: How do I add and subtract fractions?

A: To add and subtract fractions, you need to have the same denominator. If the denominators are different, you need to find the least common multiple (LCM) of the two denominators and convert both fractions to have that denominator. Then, you can add or subtract the numerators.

Q: How do I multiply and divide fractions?

A: To multiply fractions, you simply multiply the numerators and denominators. To divide fractions, you invert the second fraction (i.e., flip the numerator and denominator) and then multiply.

Q: What is the concept of mixed numbers?

A: Mixed numbers are numbers that consist of a whole number and a fraction. For example, the number 3 $\frac{1}{2}$ is a mixed number because it consists of a whole number (3) and a fraction ( $\frac{1}{2}$ ).

Q: How do I convert a mixed number to an improper fraction?

A: To convert a mixed number to an improper fraction, you need to multiply the whole number by the denominator and then add the numerator. The result is the new numerator, and the denominator remains the same.

Q: What is the concept of decimals with repeating digits?

A: Decimals with repeating digits are decimals that have a pattern of digits that repeat indefinitely. For example, the decimal 0.333... has a repeating pattern of 3's.

Q: How do I convert a decimal with repeating digits to a fraction?

A: To convert a decimal with repeating digits to a fraction, you can use algebraic manipulation to express the decimal as a fraction. For example, the decimal 0.333... can be expressed as the fraction $\frac{1}{3}$ .

Q: What is the concept of significant figures?

A: Significant figures are the digits in a number that are known to be reliable and accurate. For example, the number 3.45 has three significant figures because the digits 3, 4, and 5 are known to be reliable and accurate.

Q: How do I round numbers to a certain number of significant figures?

A: To round numbers to a certain number of significant figures, you need to look at the digit immediately to the right of the last significant digit. If this digit is 5 or greater, you need to round up the last significant digit. If this digit is less than 5, you need to round down the last significant digit.

Conclusion

In conclusion, fractions and decimals are essential concepts in mathematics that are used to express parts of a whole. Understanding these concepts and how to work with them is crucial for success in mathematics and real-world applications. By mastering fractions and decimals, you can perform calculations with ease and accuracy.