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: 32×3
    Solution:
    32×3 = 96
    Column vertical calculation:

						3	2
✖							3
						9	6
						9	6

[2/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 70×2
    Solution:
    70×2 = 140
    Column vertical calculation:

						7	0
✖							2
					1	4	0
					1	4	0

[3/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 22×3
    Solution:
    22×3 = 66
    Column vertical calculation:

						2	2
✖							3
						6	6
						6	6

[4/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 22×4
    Solution:
    22×4 = 88
    Column vertical calculation:

						2	2
✖							4
						8	8
						8	8

[5/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 32×30
    Solution:
    32×30 = 960
    Column vertical calculation:

							3	2
✖							3	0
							0	0
						9	6
						9	6	0

[6/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 70×20
    Solution:
    70×20 = 1400
    Column vertical calculation:

							7	0
✖							2	0
							0	0
					1	4	0
					1	4	0	0

[7/7 Integer column vertical calculation]
    Question type: Integer multiplication
    Original question: 22×30
    Solution:
    22×30 = 660
    Column vertical calculation:

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

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>>注：本次最多计算 7 道题。

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