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: 460+500
    Solution:
    460+500 = 960
    Column vertical calculation:

			4	6	0
➕			5	0	0
			9	6	0

[2/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 260+400
    Solution:
    260+400 = 660
    Column vertical calculation:

			2	6	0
➕			4	0	0
			6	6	0

[3/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 360+400
    Solution:
    360+400 = 760
    Column vertical calculation:

			3	6	0
➕			4	0	0
			7	6	0

[4/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 860-500
    Solution:
    860-500 = 360
    Column vertical calculation:

			8	6	0
➖			5	0	0
			3	6	0

[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 760-400
    Solution:
    760-400 = 360
    Column vertical calculation:

			7	6	0
➖			4	0	0
			3	6	0

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 760-300
    Solution:
    760-300 = 460
    Column vertical calculation:

			7	6	0
➖			3	0	0
			4	6	0

[7/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 200+300
    Solution:
    200+300 = 500
    Column vertical calculation:

			2	0	0
➕			3	0	0
			5	0	0

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>>注：本次最多计算 7 道题。

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