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

[1/7 Integer column vertical calculation]
    Question type: Integer subtraction
    Original question: 497-299
    Solution:
    497-299 = 198
    Column vertical calculation:

			1	1
			4	9	7
➖			2	9	9
			1	9	8

[2/7 Formula]
    Work: Calculate the value of equation 125×25×8 .
    Question type: Mathematical calculation
    Solution:
          125×25×8
        =3125×8
        =25000
    Answer:125×25×8=25000
[3/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 2370+1995
    Solution:
    2370+1995 = 4365
    Column vertical calculation:

			2	3	7	0
➕			11	91	9	5
			4	3	6	5

[4/7 Formula]
    Work: Calculate the value of equation (24×125)×(25×8) .
    Question type: Mathematical calculation
    Solution:
          (24×125)×(25×8)
        =3000×(25×8)
        =3000×200
        =600000
    Answer:(24×125)×(25×8)=600000
[5/7 Integer column vertical calculation]
    Question type: Integer addition
    Original question: 3999+498
    Solution:
    3999+498 = 4497
    Column vertical calculation:

			3	9	9	9
➕			1	41	91	8
			4	4	9	7

[6/7 Formula]
    Work: Calculate the value of equation (12+24+80)×50 .
    Question type: Mathematical calculation
    Solution:
          (12+24+80)×50
        =116×50
        =5800
    Answer:(12+24+80)×50=5800
[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 402×25
    Solution:
    402×25 = 10050
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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