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: 14×21
    Solution:
    14×21 = 294
    Column vertical calculation:

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

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 24×31
    Solution:
    24×31 = 744
    Column vertical calculation:

							2	4
✖							3	1
							2	4
						7	2
						7	4	4

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 88×16
    Solution:
    88×16 = 1408
    Column vertical calculation:

							8	8
✖							1	6
						5	2	8
						8	8
					1	4	0	8

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 25×31
    Solution:
    25×31 = 775
    Column vertical calculation:

							2	5
✖							3	1
							2	5
						7	5
						7	7	5

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 29×58
    Solution:
    29×58 = 1682
    Column vertical calculation:

							2	9
✖							5	8
						2	3	2
					1	4	5
					1	6	8	2

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 53×12
    Solution:
    53×12 = 636
    Column vertical calculation:

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

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 46×21
    Solution:
    46×21 = 966
    Column vertical calculation:

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

---

>>注：本次最多计算 7 道题。

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