（能简算得要简算）0.61*0.25+0.18*0 - 知识问答

（能简算得要简算）0.61*0.25+0.18*0.25+0.21*25%…(100-1456除26)*78…这两道

1个回答

0.61*0.25+0.18*0.25+0.21*25%
=0.25x(0.61+0.18+0.21)
=0.25x1
=0.25
(100-1456除26)*78
=100x78-1456/26x78
=7800-1456x3
=7800-4368
=3432

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