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: 52×3
    Solution:
    52×3 = 156
    Column vertical calculation:

						5	2
✖							3
					1	5	6
					1	5	6

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 59×4
    Solution:
    59×4 = 236
    Column vertical calculation:

						5	9
✖							4
					2	3	6
					2	3	6

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 5×40
    Solution:
    5×40 = 200
    Column vertical calculation:

							5
✖						4	0
							0
					2	0
					2	0	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 51×8
    Solution:
    51×8 = 408
    Column vertical calculation:

						5	1
✖							8
					4	0	8
					4	0	8

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 60×5
    Solution:
    60×5 = 300
    Column vertical calculation:

						6	0
✖							5
					3	0	0
					3	0	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 51×6
    Solution:
    51×6 = 306
    Column vertical calculation:

						5	1
✖							6
					3	0	6
					3	0	6

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

						5	0
✖							6
					3	0	0
					3	0	0

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>>注：本次最多计算 7 道题。

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