直接写得数.1﹣0.007= 0×0.78= 4×0.9×2.5= 5.2÷0.5÷4=0.87+0.01= 2.5÷0.1= 8×0.5÷8×1.6= 4.8÷0.3=
用简便方法计算. 125×88(25+100)×431×99+31.
简便计算(要求写出简算过程). 73÷36+105÷36+146÷3611+12+13+14+15+16+17+18+19 25×125×8×4154﹣283+246﹣117.
1.25×0.25×0.05×64 20.06×65+380×2.006﹣2.006×30.
用简便方法计算 ①7350÷25 ②54×101 ③227+364+146+173 ④5604﹣(723+1604)
0.279×258+0.742×279 13÷28+11÷27+15÷28+38÷27.