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: 37×46
    Solution:
    37×46 = 1702
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 73×99
    Solution:
    73×99 = 7227
    Column vertical calculation:

							7	3
✖							9	9
						6	5	7
					6	5	7
					7	2	2	7

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 56×72
    Solution:
    56×72 = 4032
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 29×26
    Solution:
    29×26 = 754
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 46×78
    Solution:
    46×78 = 3588
    Column vertical calculation:

							4	6
✖							7	8
						3	6	8
					3	2	2
					3	5	8	8

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 58×37
    Solution:
    58×37 = 2146
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 47×17
    Solution:
    47×17 = 799
    Column vertical calculation:

							4	7
✖							1	7
						3	2	9
						4	7
						7	9	9

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>>注：本次最多计算 7 道题。

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