Overview: 6 questions will be solved this time.Among them
           ☆6 integer calculations

[1/6 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 82-29
    Solution:
    82-29 = 53
    Column vertical calculation:

			1
			8	2
➖			2	9
			5	3

[2/6 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 100-75
    Solution:
    100-75 = 25
    Column vertical calculation:

			1	1
			1	0	0
➖				7	5
			0	2	5

[3/6 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 85-29
    Solution:
    85-29 = 56
    Column vertical calculation:

			1
			8	5
➖			2	9
			5	6

[4/6 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 91-44
    Solution:
    91-44 = 47
    Column vertical calculation:

			1
			9	1
➖			4	4
			4	7

[5/6 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 66+24
    Solution:
    66+24 = 90
    Column vertical calculation:

			6	6
➕			21	4
			9	0

[6/6 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 69+14
    Solution:
    69+14 = 83
    Column vertical calculation:

			6	9
➕			11	4
			8	3

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