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: 23×40
    Solution:
    23×40 = 920
    Column vertical calculation:

							2	3
✖							4	0
							0	0
						9	2
						9	2	0

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 43×20
    Solution:
    43×20 = 860
    Column vertical calculation:

							4	3
✖							2	0
							0	0
						8	6
						8	6	0

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 32×20
    Solution:
    32×20 = 640
    Column vertical calculation:

							3	2
✖							2	0
							0	0
						6	4
						6	4	0

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 55×30
    Solution:
    55×30 = 1650
    Column vertical calculation:

							5	5
✖							3	0
							0	0
					1	6	5
					1	6	5	0

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 44×30
    Solution:
    44×30 = 1320
    Column vertical calculation:

							4	4
✖							3	0
							0	0
					1	3	2
					1	3	2	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 38×20
    Solution:
    38×20 = 760
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 43×30
    Solution:
    43×30 = 1290
    Column vertical calculation:

							4	3
✖							3	0
							0	0
					1	2	9
					1	2	9	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！