2002.13*13/(78/12)*50简便计算 - 知识问答

2002.13*13/(78/12)*50简便计算

4个回答

2002.13×13/（78/12）×50
=20020.13×[(13×12/78)×50]
=2002.13×[(78×2/78)×50]
=2002.13×[2×50]
=2002.13×100
=200213
2002.13×13÷（78÷12）×50
=2002.13×[13×12÷78×50]
=2002.13×[78×2÷78×50]
=2002.13×[2×50]
=2002.13×100
=200213

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