1.25÷(1.25×0.125)-0.5×4
问题描述：
1.25÷(1.25×0.125)-0.5×4
0.8×(2+1.5-2+1.5)×4.8
(20.8-12.49-7.51)÷2.5×40
6.3×(1.73+1.8)+6.47×6.3
1÷0.25-0.25÷1+2.5×0.1
11×12×13-12×13-260
这几道题里,哪几道能简便,能简便的帮我算一下,不能的就算了.
答
0.125-0.5×4=0.125-2=-1.8750.8×1×4.8=3.84(20.8-20)÷2.5×40=0.8×40÷2.5=32÷2.5=12.86.3×(1.73+1.8+6.47）=6.3×10=634-0.25+0.25=4（11-1）×12×13-260=1560-260=1300