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: 80×9
    Solution:
    80×9 = 720
    Column vertical calculation:

						8	0
✖							9
					7	2	0
					7	2	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 20×9
    Solution:
    20×9 = 180
    Column vertical calculation:

						2	0
✖							9
					1	8	0
					1	8	0

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 40×9
    Solution:
    40×9 = 360
    Column vertical calculation:

						4	0
✖							9
					3	6	0
					3	6	0

[4/7 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

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 83×6
    Solution:
    83×6 = 498
    Column vertical calculation:

						8	3
✖							6
					4	9	8
					4	9	8

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 22×2
    Solution:
    22×2 = 44
    Column vertical calculation:

						2	2
✖							2
						4	4
						4	4

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 2×90
    Solution:
    2×90 = 180
    Column vertical calculation:

							2
✖						9	0
							0
					1	8
					1	8	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！