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: 696+266
    Solution:
    696+266 = 962
    Column vertical calculation:

			6	9	6
➕			21	61	6
			9	6	2

[2/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 856+213
    Solution:
    856+213 = 1069
    Column vertical calculation:

			8	5	6
➕		1	2	1	3
		1	0	6	9

[3/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 999+921
    Solution:
    999+921 = 1920
    Column vertical calculation:

			9	9	9
➕		1	91	21	1
		1	9	2	0

[4/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 458+543
    Solution:
    458+543 = 1001
    Column vertical calculation:

			4	5	8
➕		1	51	41	3
		1	0	0	1

[5/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 256+728
    Solution:
    256+728 = 984
    Column vertical calculation:

			2	5	6
➕			7	21	8
			9	8	4

[6/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 726+501
    Solution:
    726+501 = 1227
    Column vertical calculation:

			7	2	6
➕		1	5	0	1
		1	2	2	7

[7/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 168+750
    Solution:
    168+750 = 918
    Column vertical calculation:

			1	6	8
➕			71	5	0
			9	1	8

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>>注：本次最多计算 7 道题。

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