问题


There is a single choice question about elementary mathematics. Answer the question by replying A, B, C or D.
Question: There are 31 days in the month of January. Michelle did 45 push-ups each day of the month. She used the expression below to find the number of push-ups she did in January. 31 × 45 How many push-ups did Michelle do in the month of January?
A. 125 push-ups
B. 279 push-ups
C. 1,395 push-ups
D. 1,406 push-ups
Answer:

答案

模型 模型答案 正确答案
金声玉亮2.0

C. 1,395 push-ups		 C
deepseekr1

The question requires calculating the total number of push-ups Michelle did in January by multiplying the number of days (31) by the daily push-ups (45). Breaking down the multiplication:
- **31 × 45** can be split into **(30 × 45) + (1 × 45)**.
- 30 × 45 = 1,350
- 1 × 45 = 45
- Adding these: **1,350 + 45 = 1,395**.

Verification using standard multiplication:
```
31
× 45
------
155 (31 × 5)
+1240 (31 × 40)
------
1,395
```
Both methods confirm the total is **1,395 push-ups**.

**Answer:** C. 1,395 push-ups		 C
gpto1 C C
GPT-4o The correct answer is:

C. 1,395 push-ups		 C
llama3.1-70B-Instruct

C		 C
llama3.1-405B-Instruct

C. 1,395 push-ups		 C
DeepSeek-Coder-V2 C. 1,395 push-ups C
Qwen2-72B-Instruct C. 1,395 push-ups C
baichuan4 C. 1,395 push-ups C
doubao C

31×45=1395 push-ups.		 C
minimax C. 1,395 push-ups C
kimi C. 1,395 push-ups C
wenxinyiyan C. 1,395 push-ups
Explanation: Michelle did 45 push-ups each day for 31 days, so the total number of push-ups she did in January is 31 × 45 = 1,395 push-ups. The other options are incorrect because they do not match the result of the multiplication expression.		 C
zhipu To find the number of push-ups Michelle did in January, we need to multiply the number of days in January by the number of push-ups she did each day:

\[ 31 \times 45 \]

Let's perform the multiplication:

\[ 31 \times 45 = 31 \times (40 + 5) = (31 \times 40) + (31 \times 5) \]

First, calculate \( 31 \times 40 \):

\[ 31 \times 40 = 1240 \]

Next, calculate \( 31 \times 5 \):

\[ 31 \times 5 = 155 \]

Now, add these two results together:

\[ 1240 + 155 = 1395 \]

Therefore, the number of push-ups Michelle did in January is 1,395 push-ups.

The correct answer is:

C. 1,395 push-ups		 C
gpto1 C C
deepseekv3 To find the number of push-ups Michelle did in the month of January, we multiply the number of days (31) by the number of push-ups she did each day (45):

\[ 31 \times 45 = 1,395 \]

Therefore, Michelle did **1,395 push-ups** in January.

Answer: **C**		 C