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: 33×33
    Solution:
    33×33 = 1089
    Column vertical calculation:

							3	3
✖							3	3
							9	9
						9	9
					1	0	8	9

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 63×43
    Solution:
    63×43 = 2709
    Column vertical calculation:

							6	3
✖							4	3
						1	8	9
					2	5	2
					2	7	0	9

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 34×43
    Solution:
    34×43 = 1462
    Column vertical calculation:

							3	4
✖							4	3
						1	0	2
					1	3	6
					1	4	6	2

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 35×31
    Solution:
    35×31 = 1085
    Column vertical calculation:

							3	5
✖							3	1
							3	5
					1	0	5
					1	0	8	5

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 13×43
    Solution:
    13×43 = 559
    Column vertical calculation:

							1	3
✖							4	3
							3	9
						5	2
						5	5	9

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 38×37
    Solution:
    38×37 = 1406
    Column vertical calculation:

							3	8
✖							3	7
						2	6	6
					1	1	4
					1	4	0	6

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 33×37
    Solution:
    33×37 = 1221
    Column vertical calculation:

							3	3
✖							3	7
						2	3	1
						9	9
					1	2	2	1

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>>注：本次最多计算 7 道题。

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