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1、.口算1.24= 2.54= 0.86= 0.127= 3.82=320.4= 65013= 4.816= 7.64= 1.644=列竖式计算12.842= 0.1940= 5.41.07= 0.0820.14=2.190.3= 5.880.56= 2.77.5= 8.841.7= 保留一位小数482.3= 1.553.8= 7.090.52= 5.451.23=计算下面各题0.75180.15 2.070.230.45 21.360.8-12.9口算.280.03= 1.50.4= 7.64= 4.320.8= 1.4300= 0.2330= 0.6321= 5.255= 2.50.03=
2、3.0330= 9.60.6= 0.90.01=列竖式计算1.0625= 0.0550.06= 70.86= 0.370.4=5.980.23= 19.765.2= 6.210.03= 10.84.5=保留两位小数1.553.9= 3.817= 246.413= 5.636.1=解下列方程x+3.2=4.6 x-1.8=4 15-x=2 口算134= 0.754= 12.50.008= 0.90.15=0.350.3= 810 = 7.20.3= 10.05=0.640.03= 0.41632= 4.235= 1025=列竖式计算0.450.6= 2.46.2= 2.61.08= 19.84.
3、6=28.611= 3.6452= 1.3515= 43.529=计算下面各题，你认为怎样简便就怎样算。54.90.38 4.05+37.85 1.250.70.8 9.825 6.13.6+3.63.9 2.9640 口算4.44= 0.720.9= 0.20.26= 3.60.3= 38= 1.323= 12.58= 5.61.4= 2.45= 3.250= 0.786= 5.511= 解下列方程1.6x=6.4 x7=0.3 2.1x=3 x-1.5=4 x-6=7.6 5x=1.56x-35=13 3x-126=6 (5x-12)8=24简算561.25 0.80.250.412.5
4、1.25+4.6+0.752.028.5 1010.45 0.7898口算500.04= 350.007= 22.54= 0.060,05= 9.90.01= 0.5051.01= 6.730= 0.9113=8.84= 54006000= 5.255= 4.69=列竖式计算32.52.5= 2.0875= 652.6=0.061.7= 1.360.05= 2.30.46=解下列方程(100-3x)2=8 6x+3=9 4x-2=105x-39=56 18+5x=21 8x-414=0口算0.546= 3.213= 4.34= 9.993= 6.25= 2.034= 12.66= 8.448=
5、列竖式计算5.583.1= 25.60.032= 51.30.27=0.0720.15= 0.580.08= 0.188.45=0.392.9= 4.50.002= 7215=解下列方程3.4x-48=26.8 2x-97=34.2 42x+25x=13413(x+5)=169 2(x-2.6)=8 5(x+1.5)=17.5 口算6.513= 8.40.07= 5.855= 1.046=1.470.7= 0.30.07= 0.450.4= 9.60.32=9.630.3= 0.0615= 91.5= 1.60,05=列竖式计算14.217= 25.56= 6.314= 8616= 1.262
6、8= 0.41632=8.543.5= 0.0970.3= 3.20.24= 解下列方程7x3=8.19 x+0.3=1.8 3+x=5.4 4(6x+3)=60 2x+234=134 (3x-4)5=4口算0.78= 4.12= 0.454= 3.6600=3.990.01= 2.40.5= 0.224= 1.328=1.230= 8.470= 1.50.3= 4.40.11=解下列方程0.2x=6 x1.1=3 x5=154(6x+3)=60 2x+234=134 (3x-4)5=42x+1.5x=17.5 8x-3x=105 3x+x+6=26简算1.22.5+0.82.5 0.52.338 4.80.25 0.32.54 7.29.9 2.5321.25解下列方程1.4x+9.2x=53 18+7x=39 12.3x-7.5x=57.6 8(x-6.2)=41.6 (x-3)2=7.5 3(2x-4)=9 (3X-7)5=16 2(x-3)=5.8 3.6x-x=3.25 简算1.5105 2.4599+2.45 (20-4)0.254.80.9+0.48 740.28+2.62.8
