请你算一算(1)[﹣×(+)]÷(2)解方程:40%:(3x÷5)=:0.6(3)1012﹣101(4)×1.2﹣++.
脱式计算:(能用简便方法就用简便方法) 15.64﹣2.53﹣7.47; 3.7+6.3÷0.6﹣0.4; 3.5÷〔(0.45﹣0.38)×0.1〕; 5.6×7.2+4.4×7.2.
下列各题怎样简便就怎样算. 3.7×1.4×0.0572×0.81+10.41.4×25+3.45 1.5×1021.25×0.7×0.82.7×3.7+0.37×73 8.7×990.8×(12.5﹣1.25)1.25×0.4×80×2.5.
怎样算简便就怎样计算. (1)2.8+[2.4÷(90﹣60)] (2)0.4×7+×3﹣0.4×3 (3)0.125×0.25×32 (4)×+×.
能简算则简算. 2.5×6.6×0.4(9.87+9.87+9.87+9.87)×2516.7×0.4+15.5 1.96×0.57+1.96×0.436.75+23.4÷7.20.65×201.
脱式计算(能简算的要简算) 2.4×1.5+3.6×1.50.125×2.5×87.38﹣5.14+3.62﹣2.86 17.2﹣7.2×0.68.9×9.941.9﹣2.08﹣7.92.