口算:(1)300×2= (2)400×6=(3)500×4= (4)600×2=
怎样算简便就怎样算.4.32+5.43+6.68 17.17﹣6.8﹣3.2 5.29×9+5.2916.8×10.1 2.74×9.5+5×0.274 0.36+9.6÷3.2.
怎样算简便就怎样算.①2.43×99+2.43 ②6.8+1.25×6.8×8③(8.14﹣3.75)÷2.5÷4 ④4.58+2.39+(5.42+7.61)⑤6.3÷2.8 ⑥26.7﹣0.5×0.5﹣0.75.
下面各题,你有简便的方法解决吗?①3.75×25+6.25×25 ②25.46﹣8.23﹣1.76 ③2.9+7.1×10 ④1.25×32×0.25.
怎样算简便就怎样算.(12%)17.17﹣6.8﹣3.2﹣6.17 5.4×[(1.3+2.15)÷0.2] 8.4÷0.6+8.4÷0.416.8×10.1 10.9﹣0.9÷0.2+1.8 1.25×3.2×0.25.
用简便方法计算.6.3+6.44+2.7+3.56 15.35﹣(5.35+7.2)600÷1267×101 125×16×45 8×(125×25)