问题


There is a single choice question about elementary mathematics. Answer the question by replying A, B, C or D.
Question: There are 20 students in Mr. Clark's fourth-grade class. There are 5 times as many students in the entire fourth grade as there are in Mr. Clark's class. Which equation can be used to determine the number of students, n, in the entire fourth grade?
A. 5xn= 20
B. 5+20=n
C. 20x5=n
D. 20/n=5
Answer:

答案

模型 模型答案 正确答案
金声玉亮2.0

C. 20x5=n		 C
deepseekr1

The problem states that the entire fourth grade has 5 times as many students as Mr. Clark's class of 20. To find the total number of students (n) in the grade, multiply the class size by 5: **20 × 5 = n**.

- **Option A** (5×n=20) incorrectly reverses the relationship, implying the class is 5 times the grade.
- **Option B** (5+20=n) adds 5 instead of multiplying, which is incorrect.
- **Option D** (20/n=5) also reverses the relationship, leading to n=4.

The correct equation is **Option C: 20×5=n**.

Answer: C		 C
gpto1 C C
GPT-4o C. 20x5=n C
llama3.1-70B-Instruct

The correct answer is C.		 C
llama3.1-405B-Instruct

C. 20x5=n		 C
DeepSeek-Coder-V2 C. 20x5=n C
Qwen2-72B-Instruct C. 20x5=n C
baichuan4 C C
doubao C. 20x5=n. If there are 20 students in Mr. Clark's class and the entire fourth grade has 5 times as many students as his class, then multiplying 20 by 5 gives the total number of students in the entire fourth grade, which is n. C
minimax C. 20x5=n C
kimi C. 20x5=n C
wenxinyiyan C C
zhipu C. 20x5=n

Explanation: The problem states that there are 5 times as many students in the entire fourth grade as there are in Mr. Clark's class. Mr. Clark's class has 20 students. To find the total number of students in the entire fourth grade, you multiply the number of students in Mr. Clark's class by 5. This is represented by the equation \( 20 \times 5 = n \), which corresponds to option C.		 C
gpto1 C C
deepseekv3 To determine the number of students in the entire fourth grade, we can use the information given in the problem.

There are 20 students in Mr. Clark's class, and the entire fourth grade has 5 times as many students as Mr. Clark's class.

So, the number of students in the entire fourth grade, \( n \), can be calculated as:
\[ n = 20 \times 5 \]

Among the given options, the equation that represents this calculation is:

C. \( 20 \times 5 = n \)

Therefore, the correct answer is:

\boxed{C}		 C