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: 341-74
    Solution:
    341-74 = 267
    Column vertical calculation:

			1	1
			3	4	1
➖				7	4
			2	6	7

[2/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 232-55
    Solution:
    232-55 = 177
    Column vertical calculation:

			1	1
			2	3	2
➖				5	5
			1	7	7

[3/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 655-46
    Solution:
    655-46 = 609
    Column vertical calculation:

				1
			6	5	5
➖				4	6
			6	0	9

[4/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 374-34
    Solution:
    374-34 = 340
    Column vertical calculation:

			3	7	4
➖				3	4
			3	4	0

[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 722-34
    Solution:
    722-34 = 688
    Column vertical calculation:

			1	1
			7	2	2
➖				3	4
			6	8	8

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 385-35
    Solution:
    385-35 = 350
    Column vertical calculation:

			3	8	5
➖				3	5
			3	5	0

[7/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 826-26
    Solution:
    826-26 = 800
    Column vertical calculation:

			8	2	6
➖				2	6
			8	0	0

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>>注：本次最多计算 7 道题。

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