简便计算下列各题．6.7×114+3.3×275%+275%0.25×3.2-0.25+1.8×25%_数学解答

简便计算下列各题．
6.7×

+3.3×275%+275%
0.25×3.2-0.25+1.8×25%

人气：453 ℃　时间：2020-03-20 15:05:46

解答

（1）6.7×

+3.3×275%+275%
=6.7×2.75+3.3×2.75+2.75
=（6.7+3.3）×2.75+2.75
=10×2.75+2.75
=27.5+2.75
=30.25
（2）0.25×3.2-0.25+1.8×25%
=0.25×（3.2-1+1.8）
=0.25×4
=1