计算下面各题,能用简便算法的用简便算法.①3871﹣(1080﹣740)×7 ②5175÷207+102×9③0.9+1.08+0.92+0.1 ④13.59﹣6.91﹣0.09⑤983×(3.8+2.2)+0.237×1000 ⑥0.8×(35+65)×5÷100⑦30﹣[17.8+(6.2+38÷10)].
脱式计算,能简算的要简算:46.5×99+46.5; 4.85×1.25×8;(455﹣12.5×4)÷8.1; 39÷0.125÷0.8.
计算下面各题.能简便的用简便方法计算4.05÷0.5+10.7521.6÷0.8﹣1.2×56.8×2.7+2.7×3.28.4×6.9÷(6.44﹣4.14)0.38×1024.8×0.27+0.52×2.7.
计算下面各题,能简算的要简算.8.4×0.26+0.74 5.5×17.3+6.7×5.5.
请脱式计算,能简算的要简算4.85+3.62+1.38+5.15 [16.7﹣(6.2+9.5)]×8.33.25÷0.25+1.75÷0.25 10.52﹣(3.52﹣1.7)