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: 323+291
    Solution:
    323+291 = 614
    Column vertical calculation:

			3	2	3
➕			21	9	1
			6	1	4

[2/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 387+833
    Solution:
    387+833 = 1220
    Column vertical calculation:

			3	8	7
➕		1	81	31	3
		1	2	2	0

[3/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 195+676
    Solution:
    195+676 = 871
    Column vertical calculation:

			1	9	5
➕			61	71	6
			8	7	1

[4/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 968+825
    Solution:
    968+825 = 1793
    Column vertical calculation:

			9	6	8
➕		1	8	21	5
		1	7	9	3

[5/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 964+103
    Solution:
    964+103 = 1067
    Column vertical calculation:

			9	6	4
➕		1	1	0	3
		1	0	6	7

[6/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 686+936
    Solution:
    686+936 = 1622
    Column vertical calculation:

			6	8	6
➕		1	91	31	6
		1	6	2	2

[7/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 921+231
    Solution:
    921+231 = 1152
    Column vertical calculation:

			9	2	1
➕		1	2	3	1
		1	1	5	2

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>>注：本次最多计算 7 道题。

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