直接写出得数5.6+6.5= 9﹣1.9= 6÷0.25= 0.7×0.3=9.6÷3.2×0.8= 4.78﹣1.7×0.4= 4998÷202≈(估算) 6b÷3+0.5b=
能简算的用简便方法计算.(写出主要简便过程,无过程不得分) ①1.6×3.9×1.25②4.87×2.34+48.7×0.266③0.05×0.7×20×1.7 ④2.5×3.2×12.5⑤3.95×7.6+3.95×3.4﹣3.95⑥0.49×9.9.
计算下列各题,能简算的要简算.12% 50×0.125×0.02×80.8×(4﹣3.75)×9.9 0.81×99+0.81 25×(85+85+85+85)
脱式计算 (能简算的要简算) 13.7×0.125×80.8×[13﹣(3.12+5.28)] 102×0.561.53×1.7+0.47×1.7.
计算,能简算的要简算. ①6.21﹣3.8+2.2②6.03+3.7+2.97 ③17.43﹣6.57﹣2.43④20.47﹣(1.47+6.8) ⑤13.26+4.71+3.47+5.29⑥22.74+8.68﹣13.74.
计算下面各题,怎样算简便就怎样算. 2.38×6.8+7.62×6.8 12.5×4﹣3.12÷1.2 26.8﹣(4.2+2.6)×1.5 15.84÷[0.8×(7.93﹣2.43)].