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: 270+444
    Solution:
    270+444 = 714
    Column vertical calculation:

			2	7	0
➕			41	4	4
			7	1	4

[2/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 285+369
    Solution:
    285+369 = 654
    Column vertical calculation:

			2	8	5
➕			31	61	9
			6	5	4

[3/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 701+264
    Solution:
    701+264 = 965
    Column vertical calculation:

			7	0	1
➕			2	6	4
			9	6	5

[4/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 378+997
    Solution:
    378+997 = 1375
    Column vertical calculation:

			3	7	8
➕		1	91	91	7
		1	3	7	5

[5/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 844+932
    Solution:
    844+932 = 1776
    Column vertical calculation:

			8	4	4
➕		1	9	3	2
		1	7	7	6

[6/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 199+398
    Solution:
    199+398 = 597
    Column vertical calculation:

			1	9	9
➕			31	91	8
			5	9	7

[7/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 801+647
    Solution:
    801+647 = 1448
    Column vertical calculation:

			8	0	1
➕		1	6	4	7
		1	4	4	8

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>>注：本次最多计算 7 道题。

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