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: 202×3
    Solution:
    202×3 = 606
    Column vertical calculation:

						2	0	2
✖								3
						6	0	6
						6	0	6

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 401×5
    Solution:
    401×5 = 2005
    Column vertical calculation:

						4	0	1
✖								5
					2	0	0	5
					2	0	0	5

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 302×6
    Solution:
    302×6 = 1812
    Column vertical calculation:

						3	0	2
✖								6
					1	8	1	2
					1	8	1	2

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 801×8
    Solution:
    801×8 = 6408
    Column vertical calculation:

						8	0	1
✖								8
					6	4	0	8
					6	4	0	8

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 203×3
    Solution:
    203×3 = 609
    Column vertical calculation:

						2	0	3
✖								3
						6	0	9
						6	0	9

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 501×9
    Solution:
    501×9 = 4509
    Column vertical calculation:

						5	0	1
✖								9
					4	5	0	9
					4	5	0	9

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 203×2
    Solution:
    203×2 = 406
    Column vertical calculation:

						2	0	3
✖								2
						4	0	6
						4	0	6

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>>注：本次最多计算 7 道题。

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