生成8道四则运算题目,每道题目的运算符号随机生成,每道题前面有题号,运算数是1~100之间的整数,计算答案保留2位小数。并在s所有题目最后一起给出答案。
时间: 2024-02-19 08:00:10 浏览: 98
好的,以下是八道随机生成的四则运算题目:
1. 题目:1 + 41 - 58 * 2 = ? 答案:-74.00
2. 题目:2 * 55 - 36 / 6 = ? 答案:106.00
3. 题目:3 * 76 + 84 / 2 = ? 答案:249.00
4. 题目:4 + 62 / 31 * 15 = ? 答案:31.00
5. 题目:5 * 77 - 13 + 36 / 6 = ? 答案:429.00
6. 题目:6 + 15 * 47 / 94 - 17 = ? 答案:-6.00
7. 题目:7 * 41 - 58 / 2 = ? 答案:300.00
8. 题目:8 / 4 + 19 * 5 - 73 = ? 答案:-35.00
以上是八道随机生成的四则运算题目,答案如下:
1. -74.00
2. 106.00
3. 249.00
4. 31.00
5. 429.00
6. -6.00
7. 300.00
8. -35.00
相关问题
python代码生成8道四则运算题目,每道题目的运算符号随机生成,每道题前面有题号,运算数是1~100之间的整数,计算答案保留2位小数。并在所有题目最后一起给出答案。
好的,这是一个简单的Python代码实现你的要求:
```python
import random
# 随机生成运算符号
def random_operator():
operators = ['+', '-', '*', '/']
return random.choice(operators)
# 随机生成运算数
def random_number():
return random.randint(1, 100)
# 生成题目和答案
def generate_question(num):
questions = []
answers = []
for i in range(1, num+1):
a = random_number()
b = random_number()
operator = random_operator()
question = f"{i}. {a} {operator} {b} = "
if operator == '+':
answer = a + b
elif operator == '-':
answer = a - b
elif operator == '*':
answer = a * b
else:
answer = round(a / b, 2)
questions.append(question)
answers.append(answer)
return questions, answers
# 打印题目并计算答案
def print_question(num):
questions, answers = generate_question(num)
for question in questions:
print(question)
print("答案:")
for i, answer in enumerate(answers):
print(f"{i+1}. {answer}")
# 生成8道题目并打印
print_question(8)
```
运行代码后,会输出8道题目和对应的答案,类似于这样:
```
1. 42 / 92 =
2. 7 * 69 =
3. 5 * 1 =
4. 68 - 17 =
5. 43 * 4 =
6. 99 - 19 =
7. 90 / 25 =
8. 44 - 11 =
答案:
1. 0.46
2. 483
3. 5
4. 51
5. 172
6. 80
7. 3.6
8. 33
```
某心理测试题全部由单选题组成,每个题目有3个选项,不同选项得分不同(但每题分数都是在10分-99分之间),答案和分数保存在一个文件answer.txt中,格式为: 1A10B20C30 2A20B10C30 . 20A30B10C20 其中前面的数字为题号。从键盘输入某位考生答案,例如: ABCC.. 编程计算并输出该考生的成绩。
假设题目数量为n,可以按照如下步骤计算考生的成绩:
1. 从answer.txt文件中读取每个题目的正确答案和分数,保存为一个字典,例如:
```
{'1A': 10, '1B': 20, '1C': 30, '2A': 20, '2B': 10, '2C': 30, ..., 'nA': x, 'nB': y, 'nC': z}
```
2. 从键盘输入考生的答案,保存为一个字符串,例如:"ABCC..."
3. 遍历考生的答案字符串,对于每个题目,根据答案和正确答案从字典中获取分数,累加到总分中。
4. 根据总分计算得分率,例如:
```
score_rate = total_score / (n * 99)
```
5. 根据得分率计算百分制成绩,例如:
```
score = score_rate * 100
```
下面是完整代码:
```python
def read_answers(filename):
answers = {}
with open(filename, 'r') as f:
for line in f:
parts = line.strip().split()
for part in parts:
q, ans, score = part[0], part[1], int(part[2:])
answers[q+ans] = score
return answers
def calculate_score(answers, response):
total_score = 0
for i, ans in enumerate(response):
q = str(i+1)
if q+'A' in answers and ans == 'A':
total_score += answers[q+'A']
elif q+'B' in answers and ans == 'B':
total_score += answers[q+'B']
elif q+'C' in answers and ans == 'C':
total_score += answers[q+'C']
score_rate = total_score / (len(response) * 99)
score = score_rate * 100
return score
answers = read_answers('answer.txt')
response = input('请输入考生答案:')
score = calculate_score(answers, response)
print('考生得分:{}'.format(score))
```
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