Overview: 7 questions will be solved this time.Among them
           ☆7 integer calculations

[1/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 35+29
    Solution:
    35+29 = 64
    Column vertical calculation:

			3	5
➕			21	9
			6	4

[2/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 96-61
    Solution:
    96-61 = 35
    Column vertical calculation:

			9	6
➖			6	1
			3	5

[3/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 75+16
    Solution:
    75+16 = 91
    Column vertical calculation:

			7	5
➕			11	6
			9	1

[4/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 74+12
    Solution:
    74+12 = 86
    Column vertical calculation:

			7	4
➕			1	2
			8	6

[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 99-57
    Solution:
    99-57 = 42
    Column vertical calculation:

			9	9
➖			5	7
			4	2

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 73-42
    Solution:
    73-42 = 31
    Column vertical calculation:

			7	3
➖			4	2
			3	1

[7/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 58+19
    Solution:
    58+19 = 77
    Column vertical calculation:

			5	8
➕			11	9
			7	7

---

>>注：本次最多计算 7 道题。

Your problem has not been solved here? Please go to the Hot Problems section！