Problem 10 - Prealgebra

Question

Write a numerical expression for each verbal phrase. the quotient of fifteen and five

Step-by-Step Solution

Answer

The numerical expression is \( \frac{15}{5} \).

Step 1: Understand the Terms

The keyword 'quotient' implies division. In this context, it means dividing one number by another.

Step 2: Identify the Numbers Involved

The verbal phrase mentions the numbers 'fifteen' and 'five.' Here, 'fifteen' is the dividend, and 'five' is the divisor.

Step 3: Write the Numerical Expression

Based on the phrase 'the quotient of fifteen and five,' the numerical expression is written as \( \frac{15}{5} \). This means fifteen divided by five.

Key Concepts

Division in Numerical Expressions

To understand numerical expressions involving division, it's important to start with the basic concept of division itself. Division is essentially the process of determining how many times one number is contained within another. In a division problem, the number that is being divided is called the "dividend," and the number which divides it is known as the "divisor." The answer to this operation is called the "quotient."

When you encounter a phrase like "the quotient of fifteen and five," it's asking you to divide fifteen (dividend) by five (divisor). In mathematical terms, this operation is represented using the division symbol \( \div \) or a forward slash. The result of dividing fifteen by five is three, hence the numerical expression can be written as \( \frac{15}{5} = 3 \).

Understanding the fundamental components of division is crucial in breaking down and solving numerical expressions in different contexts.

Interpreting Verbal Phrases

Verbal phrases in mathematics are often used to describe mathematical operations in words rather than symbols. This might seem tricky at first, but once you know common keywords, deciphering these phrases becomes easier. For example, in this exercise, the word 'quotient' indicates a division operation. This is key to transforming a verbal statement into a numerical expression.

To effectively interpret verbal phrases:

• Look for keywords such as 'sum', 'difference', 'product', and 'quotient'.
• Identify the numbers involved in the operation described by these words.
• Understand the sequence of the operations if more than one operation is mentioned.

In the phrase "the quotient of fifteen and five," identifying 'quotient' was our cue to set up a division operation involving fifteen and five.

Writing Numerical Expressions

Translating verbal phrases into numerical expressions requires you to methodically break down the problem. After identifying the mathematical operation through keywords and determining the numbers involved, the next step is writing the expression.

For instance, with the phrase "the quotient of fifteen and five," you've determined that 'quotient' means division. You then identify fifteen as the dividend and five as the divisor. Once these components are clear, you can write the expression as \( \frac{15}{5} \).

This process of conversion can be practiced with a variety of verbal phrases:

• Ensure you understand each word and its mathematical implication.
• Be careful with the order of operations, especially in more complex phrases.
• Check your work by solving the expression to see if it makes sense.

Practice regularly to improve your skills in translating from verbal descriptions to accurate mathematical expressions.