直接写出得数.0.36+0.04= 1.8÷0.01= ÷= 6.4×=×21×= (56.9﹣32.7)×0= += 44÷=
简算:①1.8×+2.2×25% ②102×59 ③57.5﹣14.25﹣15 ④×102.31+40×102.31.
+﹣+ +++4.56×0.27+483×0.0456+1.9×4.56+0.456×30 1﹣﹣﹣﹣﹣﹣﹣﹣.
用简便方法计算.(要写出主要简算过程)6.9×+6÷8 10.8﹣1.5﹣8.5 199+456.
怎样算简便就怎样算.24×+51× 0.25×(1.6+1.6+1.6+1.6) ÷+× 0.125×32×2.5.
计算(能简便的要简便)×+× 4.2×102﹣8.4 ÷(1﹣)× 36×.