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: 32×9
    Solution:
    32×9 = 288
    Column vertical calculation:

						3	2
✖							9
					2	8	8
					2	8	8

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 19×3
    Solution:
    19×3 = 57
    Column vertical calculation:

						1	9
✖							3
						5	7
						5	7

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 94×3
    Solution:
    94×3 = 282
    Column vertical calculation:

						9	4
✖							3
					2	8	2
					2	8	2

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 53×1
    Solution:
    53×1 = 53
    Column vertical calculation:

						5	3
✖							1
						5	3
						5	3

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 92×3
    Solution:
    92×3 = 276
    Column vertical calculation:

						9	2
✖							3
					2	7	6
					2	7	6

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 99×3
    Solution:
    99×3 = 297
    Column vertical calculation:

						9	9
✖							3
					2	9	7
					2	9	7

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 91×3
    Solution:
    91×3 = 273
    Column vertical calculation:

						9	1
✖							3
					2	7	3
					2	7	3

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>>注：本次最多计算 7 道题。

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