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: 12×69
    Solution:
    12×69 = 828
    Column vertical calculation:

							1	2
✖							6	9
						1	0	8
						7	2
						8	2	8

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 67×16
    Solution:
    67×16 = 1072
    Column vertical calculation:

							6	7
✖							1	6
						4	0	2
						6	7
					1	0	7	2

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 42×69
    Solution:
    42×69 = 2898
    Column vertical calculation:

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

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 41×21
    Solution:
    41×21 = 861
    Column vertical calculation:

							4	1
✖							2	1
							4	1
						8	2
						8	6	1

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 32×24
    Solution:
    32×24 = 768
    Column vertical calculation:

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

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 14×89
    Solution:
    14×89 = 1246
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 42×15
    Solution:
    42×15 = 630
    Column vertical calculation:

							4	2
✖							1	5
						2	1	0
						4	2
						6	3	0

---

>>注：本次最多计算 7 道题。

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