一、用竖式计算 0.396÷1.2= 0.756÷0.36= 15.6×13= 3.06×36= 1.55÷3.9 (保留一位小数) 0.18×15= 0.025×14= 5.76×3= 0.04×0.12= 3.84×2.6≈ 7.15×22 90.75÷3.3 3.68×0.25 16.9÷0.13 3.7×0.016 13.76×0.8= 5.2×0.6 8.4×1.3 6.4×0.5 4.48×0.4 5.25×5 35.4×4.2 0.042×0.54 0.76×0.32 5.6÷3.5 0.49÷1.4 4.8×0.25= 0.125×1.4≈ (保留两位小数) 2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数) 10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算) 二、脱式计算(能简算的要简算) 18.76×9.9+18.76 3.52÷2.5÷0.4 3.9-4.1+6.1-5.9 0.89×100.1 9.6÷0.8÷0.4 4.2×99+4.2 3.65×10.1 17.8÷(1.78×4) 1.25×2.5×32 3.2×0.25×12.5 15.2÷0.25÷4 146.5-(23+46.5) 3.83×4.56+3.83×5.44 4.36×12.5×8 9.7×99+9.7 0.65×101 27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 1 .0 8 ×2 5 2 .5 2 ×3 .4 (4 5 .9 -3 2 .7 )÷8 ÷0 .1 2 5 3 .1 4 ×0 .6 8 +3 1 .4 ×0 .0 3 2 5 .6 ÷1 .2 5 ÷0 .8 ÷2 .5 ÷0 .4 7 .2 ×0 .2 +2 .4 ×1 .4 8 .9 ×1 .0 1 7 .7 4 ×(2 .8 -1 .3 )+1 .5 ×2 .2 3 .9 ×2 .7 +3 .9 ×7 .3 8 -1 .8 ÷0 .1 2 5 ÷0 .8 1 2 .7 ×9 .9 +1 .2 7 2 1 ×(9 .3 -3 .7 )-5 .6 1 5 .0 2 -6 .8 -1 .0 2 5 .4 ×1 1 -5 .4 2 .3 ×1 6 +2 .3 ×2 3 +2 .3 9 .4 3 -(6 .2 8 -1 .5 7 ) 3 .6 5 ×4 .7 -3 6 .5 ×0 .3 7 4 6 ×5 7 +2 3 ×8 6 1 3 .7 ×0 .2 5 -3 .7 ÷4 2 .2 2 ×9 .9 +6 .6 6 ×6 .7 1 0 1 ×0 .8 7 -0 .9 1 ×8 7 1 0 .7 ×1 6 .1 -1 5 .1 ×1 0 .7 0 .7 9 ×1 9 9 1 .7 6 +0 .1 9 5 +3 .2 4 4 .8 +8 .6 3 +5 .2 +0 .3 7 5 .9 3 +0 .1 9 +2 .8 1 2 .3 5 +1 .7 1 3 +0 .2 8 7 +7 .6 5 1 .5 7 +0 .2 4 5 +7 .4 3 6 .0 2 +3 .6 +1 .9 8 7 .5 +4 .9 -6 .5 8 -2 .4 5 -1 .5 0 .1 3 4 +2 .6 6 +0 .8 6 6 1 .2 7 +3 .9 +0 .7 3 +1 6 .1 1 .2 9 +3 .7 +2 .7 1...