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: 44×34
    Solution:
    44×34 = 1496
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 64×49
    Solution:
    64×49 = 3136
    Column vertical calculation:

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

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 24×49
    Solution:
    24×49 = 1176
    Column vertical calculation:

							2	4
✖							4	9
						2	1	6
						9	6
					1	1	7	6

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 74×64
    Solution:
    74×64 = 4736
    Column vertical calculation:

							7	4
✖							6	4
						2	9	6
					4	4	4
					4	7	3	6

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 14×49
    Solution:
    14×49 = 686
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 48×47
    Solution:
    48×47 = 2256
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 34×47
    Solution:
    34×47 = 1598
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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