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: 611×9
    Solution:
    611×9 = 5499
    Column vertical calculation:

						6	1	1
✖								9
					5	4	9	9
					5	4	9	9

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 258×5
    Solution:
    258×5 = 1290
    Column vertical calculation:

						2	5	8
✖								5
					1	2	9	0
					1	2	9	0

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 190×3
    Solution:
    190×3 = 570
    Column vertical calculation:

						1	9	0
✖								3
						5	7	0
						5	7	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 737×6
    Solution:
    737×6 = 4422
    Column vertical calculation:

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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 280×6
    Solution:
    280×6 = 1680
    Column vertical calculation:

						2	8	0
✖								6
					1	6	8	0
					1	6	8	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 731×3
    Solution:
    731×3 = 2193
    Column vertical calculation:

						7	3	1
✖								3
					2	1	9	3
					2	1	9	3

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 286×4
    Solution:
    286×4 = 1144
    Column vertical calculation:

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

---

>>注：本次最多计算 7 道题。

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