冉美儿
幼苗
共回答了21个问题采纳率:85.7% 举报
2008×98又1/4-225×10又1/25+200又4/5×28又3/4
=2008×98+2008×1/4-225×10-225×1/25+(200+4/5)×(28+3/4)
=2008×(100-2)+502-2250-9+200×28+200×3/4+4/5×28+4/5×3/4
=200800-4016+502-2259+5600+150+22.4+0.6
=200800-4016-2259+502+5600+150+23
=200800-6275+6275
=200800
1年前
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