来自马浩的问题
脱式计算.(能简便计算的要简算)3.7×1.4×0.051.4×25+3.450.8×(12.5-1.25)1.5×1021.25×0.7×0.88.65-3.7+1.35-6.3.
脱式计算.(能简便计算的要简算)
3.7×1.4×0.05 1.4×25+3.45 0.8×(12.5-1.25)1.5×102 1.25×0.7×0.8 8.65-3.7+1.35-6.3.


脱式计算.(能简便计算的要简算)3.7×1.4×0.051.4×25+3.450.8×(12.5-1.25)1.5×1021.25×0.7×0.88.65-3.7+1.35-6.3.
脱式计算.(能简便计算的要简算)
3.7×1.4×0.05 1.4×25+3.45 0.8×(12.5-1.25)1.5×102 1.25×0.7×0.8 8.65-3.7+1.35-6.3.
(1)3.7×1.4×0.05=3.7×(1.4×0.05)=3.7×0.07=0.259;(2)1.4×25+3.45=35+3.45=38.45;(3)0.8×(12.5-1.25)=0.8×12.5-0.8×1.25=10-1=9;(4)1.5×102=1.5×(100+2)=1.5×100+1.5×2=150+3=153;(5...