Select the best answer for the question.
1. Which of the following is a mixed number?
A. $2 / 5$
B. 2.3
C. $2 \frac{1}{2}$
D. $5 / 2$
Answer (2)
Define a mixed number: a number with an integer and a proper fraction.
Option A ( 2/5 ) is a proper fraction.
Option B (2.3) is a decimal number.
Option C ( 2 2 1 ) is a mixed number. C
Explanation
Understanding Mixed Numbers We are asked to identify which of the given options is a mixed number. A mixed number is a number consisting of an integer and a proper fraction. Let's examine each option.
Analyzing Option A Option A: 2/5 is a proper fraction, where the numerator (2) is less than the denominator (5). Therefore, it is not a mixed number.
Analyzing Option B Option B: 2.3 is a decimal number. It can be written as a mixed number, but in its current form, it is not a mixed number.
Analyzing Option C Option C: 2 2 1 consists of an integer part (2) and a proper fraction part ( 1/2 ). Thus, it fits the definition of a mixed number.
Analyzing Option D Option D: 5/2 is an improper fraction, where the numerator (5) is greater than the denominator (2). It can be written as a mixed number ( 2 2 1 ), but in its current form, it is not a mixed number.
Conclusion Therefore, the correct answer is C, as it is the only option presented in the form of a mixed number.
Examples
Mixed numbers are commonly used in everyday life, especially in cooking and baking. For example, a recipe might call for 2 2 1 cups of flour. This means you need 2 full cups and a half cup of flour. Understanding mixed numbers helps in accurately measuring ingredients and following recipes.
The correct answer is C, as it is the only choice that qualifies as a mixed number, which includes both an integer and a proper fraction. The mixed number 2 2 1 consists of the integer 2 and the fraction 2 1 . Other options either represent fractions or decimals, not mixed numbers.
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