Overview: 7 questions will be solved this time.Among them
           ☆7 integer calculations

[1/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 700+90
    Solution:
    700+90 = 790
    Column vertical calculation:

			7	0	0
➕				9	0
			7	9	0

[2/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 280-80
    Solution:
    280-80 = 200
    Column vertical calculation:

			2	8	0
➖				8	0
			2	0	0

[3/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 360+400
    Solution:
    360+400 = 760
    Column vertical calculation:

			3	6	0
➕			4	0	0
			7	6	0

[4/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 800+800
    Solution:
    800+800 = 1600
    Column vertical calculation:

			8	0	0
➕		1	8	0	0
		1	6	0	0

[5/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 340-60
    Solution:
    340-60 = 280
    Column vertical calculation:

			1
			3	4	0
➖				6	0
			2	8	0

[6/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 570-300
    Solution:
    570-300 = 270
    Column vertical calculation:

			5	7	0
➖			3	0	0
			2	7	0

[7/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 600+900
    Solution:
    600+900 = 1500
    Column vertical calculation:

			6	0	0
➕		1	9	0	0
		1	5	0	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！