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: 335×700
    Solution:
    335×700 = 234500
    Column vertical calculation:

								3	3	5
✖								7	0	0
								0	0	0
							0	0	0
					2	3	4	5
					2	3	4	5	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 3025×40
    Solution:
    3025×40 = 121000
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1600÷400
    Solution:
    1600÷400 = 4
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 385×200
    Solution:
    385×200 = 77000
    Column vertical calculation:

								3	8	5
✖								2	0	0
								0	0	0
							0	0	0
						7	7	0
						7	7	0	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 3075×90
    Solution:
    3075×90 = 276750
    Column vertical calculation:

							3	0	7	5
✖									9	0
							0	0	0	0
					2	7	6	7	5
					2	7	6	7	5	0

[6/7 Integer column vertical calculation]
    Question type: Integer division
    Original question: 1800÷450
    Solution:
    1800÷450 = 4
    Column vertical calculation:

							4
4	5	0	丿	1	8	0	0
				1	8	0	0
							0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 616×900
    Solution:
    616×900 = 554400
    Column vertical calculation:

								6	1	6
✖								9	0	0
								0	0	0
							0	0	0
					5	5	4	4
					5	5	4	4	0	0

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>>注：本次最多计算 7 道题。

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