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: 10×2
    Solution:
    10×2 = 20
    Column vertical calculation:

						1	0
✖							2
						2	0
						2	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 12×6
    Solution:
    12×6 = 72
    Column vertical calculation:

						1	2
✖							6
						7	2
						7	2

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 15×5
    Solution:
    15×5 = 75
    Column vertical calculation:

						1	5
✖							5
						7	5
						7	5

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 37×6
    Solution:
    37×6 = 222
    Column vertical calculation:

						3	7
✖							6
					2	2	2
					2	2	2

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 6×50
    Solution:
    6×50 = 300
    Column vertical calculation:

							6
✖						5	0
							0
					3	0
					3	0	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 10×4
    Solution:
    10×4 = 40
    Column vertical calculation:

						1	0
✖							4
						4	0
						4	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 6×60
    Solution:
    6×60 = 360
    Column vertical calculation:

							6
✖						6	0
							0
					3	6
					3	6	0

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>>注：本次最多计算 7 道题。

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