https://r2.erweima.ai/mathbot/image/1718720949792b3yj7e9u.jpg

check the answers on paper,list the wrong answers and give the right answer of that question 

It seems that the OCR tool could not load the Chinese language data. I will manually review the answers in the provided image and check for any incorrect answers. Let's go through them step by step.

### Section 1: 直接写得数 (Direct Calculation)

1. \( 840 \div 4 = 210 \) (Correct)
2. \( 220 \times 40 = 8800 \) (Incorrect, should be \( 220 \times 40 = 8800 \))
3. \( 3000 \div 5 = 600 \) (Correct)
4. \( 803 \div 4 \approx 200 \) (Incorrect, \( 803 \div 4 = 200.75 \))
5. \( 30 \times 15 = 450 \) (Correct)
6. \( 0 \div 150 = 0 \) (Correct)
7. \( 40 \times 70 = 2800 \) (Incorrect, should be \( 40 \times 70 = 2800 \))
8. \( 59 \times 61 = 3599 \) (Incorrect, should be \( 59 \times 61 = 3599 \))

### Section 2: 验式计算 (Verification Calculation)

1. \( 75 \times 81 = 6075 \) (Correct)
2. \( 853 \div 8 = 106 \ldots 5 \) (Correct, \( 853 \div 8 = 106 \) with remainder 5)
3. \( 424 \div 7 = 60 \ldots 4 \) (Correct, \( 424 \div 7 = 60 \) with remainder 4)

### Section 3: 脱式计算 (Calculation without Formulas)

1. \( 465 + 205 \div 5 = 506 \) (Incorrect, should be \( 465 + 41 = 506 \))
2. \( 762 - 42 \times 16 = 90 \) (Correct, \( 762 - 672 = 90 \))
3. \( 24 \times (180 \div 5) = 864 \) (Correct, \( 24 \times 36 = 864 \))

### Summary of Incorrect Answers

1. \( 220 \times 40 = 8800 \)
2. \( 803 \div 4 = 200.75 \)
3. \( 40 \times 70 = 2800 \)
4. \( 59 \times 61 = 3599 \)
5. \( 465 + 205 \div 5 = 506 \)

Please review these corrections. Do you want any detailed explanations or have any questions?

Here are five more questions you might want to ask:
1. Can you explain why \( 803 \div 4 \approx 200 \) is incorrect?
2. How is \( 220 \times 40 = 8800 \) calculated step-by-step?
3. What is the correct way to verify \( 59 \times 61 = 3599 \)?
4. How do you solve \( 465 + 205 \div 5 \) correctly?
5. Can you show the verification process for \( 424 \div 7 \)?

**Tip:** When dividing numbers, always check if the result should be an exact quotient or an approximation, and ensure the remainder is considered if necessary.

Learn how to check answers on paper for mathematical problems, identifying incorrect solutions and providing the correct ones. This page covers various math concepts including division, multiplication, and approximation. Suitable for middle school students.

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