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1、45.233.5= 1.37+2.65= 54 (3.94+6.86) （3.2+0.12）0.8 0.1750.254 8.25+1.55= 7.32.25= 1.80.25+4.2 28.7-17.9+4.5 2.43-6.18 102.45= 3.7+2.36= 12 (15.4-12.2) 9 0.3(8-6.5) 0.499+0.4 10.28.75= 15.4+2.97= 7.8+4.56+2.2 5.01-1.9+4.99 12.7+12.5511.657.39= 103.14= 3.64-2.5 0.656.4-0.655.4 780.250.4 1.443.98= 1.360
2、.8= 90 (3.6-1.8) 3.6+5.8-1.25 0.36 (6.1-4.6)0.88534.7= 0.77.8= 8.55.677.55.67 1.6(1.8+1.95)-2.5 4.51.14+1.51.24 1.30.25= 1.443.98= 6.2+3.5254 7.324.370.9 4.050.5+0.814.80.25= 4.81.2= 1.2532 0.563.480.446.52 2.8+（2.2527.51.5） 0.320.8= 0.321.2= 5.87.67.64.2 145.358.641.4 （5.13.6）0.810.099.80.5= 9.81.3
3、= 0.54+0.56 （7.52.30.4）-0.2 5 2.16+0.93 2.421.1= 3.141.5= 2.6(0.1750.25) 70.81.251.75 (80.8)1.25 2.60.8= 2.152.1= 9.40.96(5.40.9) 2.1251.5+7.8751.5 0.71010.7 0.1250= 2.60.5= 0.1254.78 12.51.682.32 5672059.60.8= 3.251.8= 19.60.48（5.40.9） 1.92（2.3+10.515） 180.6（8-6.5） 4.80.9= 9.341.4= 7.29.9 4.75994.7
4、5 70.81.251.750.79.32= 1.872.3= 3.540.290.292.54 1.25322.5 1.63.23.2 0.150.63= 1.80.85= 930.313 4.818.35.1911.1 2.5（80.4） 11.73+40.39= 32.8520.39= 1380.250.4 1258.8 0.459833.87+16.89=10.21-3.85=（37.266.01）0.45.5 2.380.55.622 15.84.210.53.8+3.54= 3.052.9= 51.84.8（2.030.18） 1.25322.5 1.63.23.2 11.657.
5、39= 103.14= 9.43(8.65+0.40) 4.6+12.3+5.8 15(1.3+3.9) 87.23= 3.8+3.54= 4.61.75+2.08 5(4.192.83) 7.41(2.96+3.04) 8534.7= 0.77.8= 4.28+0.533.37 3.2+1.272.49 1.54+2.08+3.62 1.443.98= 1.360.8= 9.5+4.856.36 5.6+2.7+4.4 4.6(1.75+2.08) 4.81.2= 0.320.8= 4.023.5+0.98 70.81.251.75 54.19+2.83 2.134= 4.80.3= 2.6
6、+1.43 (8+0.8)1.25 2.50.61.80.5 8.25+1.55= 7.32.25= 2.52.84 2.513+0.9 0.2513.70.4 9.341.4= 0.79.32= 1.83+3.79+0.17 221.67 0.894.8+0.895.2 1.872.3= 0.150.63= 100.340.66 12.8+2.049.5 6.159.442 1.80.85= 480.15= 4.53.6+5.20.35 4.50.9+5.50.9 35.7+14-30.8 3.7+2.36= 10.28.75= 5.4（2.74） 9.40.96(5.40.9) 526.5
7、+260.37 9.81.3= 6540.9= 1.6(2.25+10.51.5) 90(3.61.8) 3.47.83.9 2.60.8= 2.152.1= 0.36(6.14.6) 0.8 54(3.94+6.86) 0.1750.254 2.134= 4.80.3= (3.2+0.12)0.8 0.1750.250.4 28.77+4.5 3.251.8= 4.81.3= 96 (15.412.2) 2.43-0.18 9 0.3(86.5) 1.25+2.41= 1.30.56= 7.8+4.56+2.2 12.7+12.55 0.499+0.4 15.4+2.97= 5.94+10.7=3.642.5 0.656.40.655.4 5.011.9+4.99 8.25+1.55= 7.32.25= 2.52.84 2.513+0.9 0.2513.70.4
北师大小学四年级数学下册脱式计算竖式计算
