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

[1/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 140-100
    Solution:
    140-100 = 40
    Column vertical calculation:

			1	4	0
➖			1	0	0
			0	4	0

[2/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 560-130
    Solution:
    560-130 = 430
    Column vertical calculation:

			5	6	0
➖			1	3	0
			4	3	0

[3/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 120-120
    Solution:
    120-120 = 0
    Column vertical calculation:

			1	2	0
➖			1	2	0
			0	0	0

[4/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 120-100
    Solution:
    120-100 = 20
    Column vertical calculation:

			1	2	0
➖			1	0	0
			0	2	0

[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 360-100
    Solution:
    360-100 = 260
    Column vertical calculation:

			3	6	0
➖			1	0	0
			2	6	0

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 360-140
    Solution:
    360-140 = 220
    Column vertical calculation:

			3	6	0
➖			1	4	0
			2	2	0

[7/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 630-120
    Solution:
    630-120 = 510
    Column vertical calculation:

			6	3	0
➖			1	2	0
			5	1	0

---

>>注：本次最多计算 7 道题。

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