
1+2=3......................100000000=???????????????
2个回答
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1+2=3......................100000000
=(1+100000000)×(100000000÷2)
=100000001×20000000
=2000000020000000
=(1+100000000)×(100000000÷2)
=100000001×20000000
=2000000020000000
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