Let's solve each problem step by step:

1. (4 + 5 + 1)

Add left to right: (4 + 5 = 9), then (9 + 1 = 10).
Answer: 10

2. (10 - 3 - 2)

Subtract left to right: (10 - 3 = 7), then (7 - 2 = 5).
Answer:5

3. (10 - (3 + 2))

Calculate parentheses first: (3 + 2 =5), then (10 -5=5).
Answer:5

4. (12 -2 -3)

Subtract left to right: (12-2=10), then (10-3=7).
Answer:7

5. (12 - (2 +3))

Parentheses first: (2+3=5), then (12-5=7).
Answer:7

Final answers: 10,5,5,7,7.
(\boxed{10}), (\boxed{5}), (\boxed{5}), (\boxed{7}), (\boxed{7}) (if separate boxes are needed, or as a list: 10 5 5 7 7)

But since the question might expect all answers in order, the sequence is: 10,5,5,7,7.

Final Answer
(\boxed{10})
(\boxed{5})
(\boxed{5})
(\boxed{7})
(\boxed{7})

(Or if combined as per the problem's format, but typically each blank gets its own box.)

(\boxed{10})
(\boxed{5})
(\boxed{5})
(\boxed{7})
(\boxed{7})

作者声明:本文包含人工智能生成内容。