Overview: 3 questions will be solved this time.Among them
           ☆3 integer calculations

[1/3 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 64×30
    Solution:
    64×30 = 1920
    Column vertical calculation:

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

[2/3 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 213×3
    Solution:
    213×3 = 639
    Column vertical calculation:

						2	1	3
✖								3
						6	3	9
						6	3	9

[3/3 Integer column vertical calculation]
    Question type: Integer division
    Original question: 300÷12
    Solution:
    300÷12 = 25
    Column vertical calculation:

				2	5
1	2	丿	3	0	0
			2	4
				6	0
				6	0
					0

Your problem has not been solved here? Please go to the Hot Problems section！