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: 2×44
    Solution:
    2×44 = 88
    Column vertical calculation:

							2
✖						4	4
							8
						8
						8	8

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 94×2
    Solution:
    94×2 = 188
    Column vertical calculation:

						9	4
✖							2
					1	8	8
					1	8	8

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 31×6
    Solution:
    31×6 = 186
    Column vertical calculation:

						3	1
✖							6
					1	8	6
					1	8	6

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 72×3
    Solution:
    72×3 = 216
    Column vertical calculation:

						7	2
✖							3
					2	1	6
					2	1	6

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 26×7
    Solution:
    26×7 = 182
    Column vertical calculation:

						2	6
✖							7
					1	8	2
					1	8	2

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 22×6
    Solution:
    22×6 = 132
    Column vertical calculation:

						2	2
✖							6
					1	3	2
					1	3	2

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 28×3
    Solution:
    28×3 = 84
    Column vertical calculation:

						2	8
✖							3
						8	4
						8	4

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>>注：本次最多计算 7 道题。

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