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: 46×3
    Solution:
    46×3 = 138
    Column vertical calculation:

						4	6
✖							3
					1	3	8
					1	3	8

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 63×4
    Solution:
    63×4 = 252
    Column vertical calculation:

						6	3
✖							4
					2	5	2
					2	5	2

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 44×5
    Solution:
    44×5 = 220
    Column vertical calculation:

						4	4
✖							5
					2	2	0
					2	2	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 40×6
    Solution:
    40×6 = 240
    Column vertical calculation:

						4	0
✖							6
					2	4	0
					2	4	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 60×6
    Solution:
    60×6 = 360
    Column vertical calculation:

						6	0
✖							6
					3	6	0
					3	6	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 40×7
    Solution:
    40×7 = 280
    Column vertical calculation:

						4	0
✖							7
					2	8	0
					2	8	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 2×90
    Solution:
    2×90 = 180
    Column vertical calculation:

							2
✖						9	0
							0
					1	8
					1	8	0

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>>注：本次最多计算 7 道题。

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