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: 10×4
    Solution:
    10×4 = 40
    Column vertical calculation:

						1	0
✖							4
						4	0
						4	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 12×5
    Solution:
    12×5 = 60
    Column vertical calculation:

						1	2
✖							5
						6	0
						6	0

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 90×7
    Solution:
    90×7 = 630
    Column vertical calculation:

						9	0
✖							7
					6	3	0
					6	3	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 11×8
    Solution:
    11×8 = 88
    Column vertical calculation:

						1	1
✖							8
						8	8
						8	8

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 8×50
    Solution:
    8×50 = 400
    Column vertical calculation:

							8
✖						5	0
							0
					4	0
					4	0	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 10×6
    Solution:
    10×6 = 60
    Column vertical calculation:

						1	0
✖							6
						6	0
						6	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 8×60
    Solution:
    8×60 = 480
    Column vertical calculation:

							8
✖						6	0
							0
					4	8
					4	8	0

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>>注：本次最多计算 7 道题。

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