看图列式计算
简便计算:1×2.5×4; 2.3×18+2×2.3.
神机妙算细又巧!14.64+3.7×2.8 72.5×0.4﹣81.2÷56 13.8×0.45+138×0.055(1.5÷4)÷(0.15÷4)(1.25+1.25+1.25+1.25)×0.8×0.25.
用简便方法计算.51.27﹣8.66﹣1.34 88×125 28.4﹣3.96﹣1.04+4.664×64+36×64 58×99 35×4×25×20.
计算下面各题.(能简算的要简算)(1)40.5÷0.5+10.75 (2)213.6÷0.8÷0.3 (3)39.22÷3.7×2.5(4)1.25×2.5×32 (5)0.24×103 (6)13.7×5+6.3×5.
脱式计算.9.5+4.85﹣6.13 75.8﹣(15.3﹣4.8) 75+360÷20﹣5 (240+60÷5)×3.