20与40相乘,可以先算___×___=___,再在得数末尾添个___即可.

2025-04-07 10:46:40
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回答1:

20与40相乘,可以先算2×4=8,再在得数末尾添2个0,就是20×40=800.
故答案为:2,4,8,2个0.