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: 14×50
    Solution:
    14×50 = 700
    Column vertical calculation:

							1	4
✖							5	0
							0	0
						7	0
						7	0	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 24×20
    Solution:
    24×20 = 480
    Column vertical calculation:

							2	4
✖							2	0
							0	0
						4	8
						4	8	0

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 37×600
    Solution:
    37×600 = 22200
    Column vertical calculation:

								3	7
✖							6	0	0
								0	0
							0	0
					2	2	2
					2	2	2	0	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 19×200
    Solution:
    19×200 = 3800
    Column vertical calculation:

								1	9
✖							2	0	0
								0	0
							0	0
						3	8
						3	8	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 14×500
    Solution:
    14×500 = 7000
    Column vertical calculation:

								1	4
✖							5	0	0
								0	0
							0	0
						7	0
						7	0	0	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 24×200
    Solution:
    24×200 = 4800
    Column vertical calculation:

								2	4
✖							2	0	0
								0	0
							0	0
						4	8
						4	8	0	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 28×2
    Solution:
    28×2 = 56
    Column vertical calculation:

						2	8
✖							2
						5	6
						5	6

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>>注：本次最多计算 7 道题。

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