Overview: 7 questions will be solved this time.Among them
           ☆7 integer calculations

[1/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 24×50
    Solution:
    24×50 = 1200
    Column vertical calculation:

							2	4
✖							5	0
							0	0
					1	2	0
					1	2	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 133×3
    Solution:
    133×3 = 399
    Column vertical calculation:

						1	3	3
✖								3
						3	9	9
						3	9	9

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 160÷4
    Solution:
    160÷4 = 40
    Column vertical calculation:

			4	0
4	丿	1	6	0
		1	6
			0	0
				0
				0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 20×60
    Solution:
    20×60 = 1200
    Column vertical calculation:

							2	0
✖							6	0
							0	0
					1	2	0
					1	2	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 124×2
    Solution:
    124×2 = 248
    Column vertical calculation:

						1	2	4
✖								2
						2	4	8
						2	4	8

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 240÷3
    Solution:
    240÷3 = 80
    Column vertical calculation:

			8	0
3	丿	2	4	0
		2	4
			0	0
				0
				0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 54×30
    Solution:
    54×30 = 1620
    Column vertical calculation:

							5	4
✖							3	0
							0	0
					1	6	2
					1	6	2	0

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>>注：本次最多计算 7 道题。

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