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: 16×5
    Solution:
    16×5 = 80
    Column vertical calculation:

						1	6
✖							5
						8	0
						8	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 26×3
    Solution:
    26×3 = 78
    Column vertical calculation:

						2	6
✖							3
						7	8
						7	8

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 20×5
    Solution:
    20×5 = 100
    Column vertical calculation:

						2	0
✖							5
					1	0	0
					1	0	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 27×4
    Solution:
    27×4 = 108
    Column vertical calculation:

						2	7
✖							4
					1	0	8
					1	0	8

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 16×50
    Solution:
    16×50 = 800
    Column vertical calculation:

							1	6
✖							5	0
							0	0
						8	0
						8	0	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 26×30
    Solution:
    26×30 = 780
    Column vertical calculation:

							2	6
✖							3	0
							0	0
						7	8
						7	8	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 20×50
    Solution:
    20×50 = 1000
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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