1、课前速算题doc4.7+2.3= 0.75100=0.020.5= 6.37= 5.6100=0.360.4= 3.60.3= 0.640.8= 0.723.6=0.81.1= 7.2+12.8= 1.40.5=12.84= 0.40.5=2.40.8= 10.89= 9.60.8= 3.080.1= 01.7=6.40.8=2.40.4=1.258= 0.2540=0.1258=0.6401.62.540.5230.0190.151.54.331.572.4524.530.2520.1562.580.4532.560.742.0540.50.153=2.53=0.054=0.73=41.6=
2、0.56=0.76=0.59=0.053=0.126=7.25=2.54=7.22=9.62=10.53=4.50.2=1.870=601.2=60.13=1.258=0.4150=0.2544=3.152=1.40.3=0.612=0.20.3=0.325=1.25=3.24=0.186=150.3=0.0110=0.254=1.65=10.36=5.0610=10.53=3.560.1=10.52=110.8=81.5=410.01=152.5=6.52 =400.5=0.0520=150.01=450.2=3.0510=0.254=1.30.3=1.250.8=1.80.04=0.20.
3、04=0.0450=12.84=25.55=0.0844=0.328=10.42=0.724=10.82=4.324=0.542=10.83=3.7=( )d5=( ) d3.5dm=( )200m=( )3.8=( )c935m=( )km230c=( )0.5=（ ）g600g=( )700mm=（ ）dm9.2=( )d1500d=( )850km=( )m463m=( )cm896dm=( )m2.5d=( )79公顷=（ ）0.9=( )c5k=（ ）公顷1.5吨=（ ）0.6km=( )m0.6分=（ ）秒0.8时=（ ）分9.2=( )d1500d=( )0.23k=（ ）3吨=
4、（ ）2=（ ）c10c=( )d0.2公顷=( )k360=( )m0.56吨=（ ）50=( )g0.5时=（ ）分 0.70.8= 0.0420= 5.6+0.4= 7.20.8= 63.4= 1.40.5= 0.5628= 0.360.4= 0.640.8= 7.2+12.8= 12.84= 5.213= 12.55= 1.64+4.1=1020= 3.080.01= 4.951000= 6.90.1= 0.40.5=2.40.8= 10.89= 9.60.8= 4.950.9= 9.650.1= 0.325100= 2.58=0.560.7= 0.1254= 3.280.1= 3.9
5、0.13=7.20.1= 0.010.1= 0.250.4= 1.60.8=12.5= 1.250.8= 3.20.04= 01.7=9.60.8= 50.24= 16.50.5= 50.12= 240.5=4.80.5= 2.84.2= 50.25=12.55= 1020= 8.6510= 0.350.6=3.080.01= 4.951000= 0.40.5= 10.89= 9.60.8= 4.950.9= 9.650.1= 0.325100= 2.58=0. 560.7= 0.1254= 3.90.13=7.20.1= 0.010.1= 0.250.4= 12.5= 1.250.8= 3.
6、20.04= 01.7= 9.60.8= 3.90.13 16.50.5= 50.12= 240.5=4.80.5= 2.84.2= 0.842.1= 50.25=7.80.01= 5.40.6= 3.25= 70.62=0.560.8= 7.42.8= 0.180.2= 0.168=4.50.02= 87.2= 1.230= 0.0120.2=7.30.3= 06= 3.60.12= 7.80.6=25= 4.55= 0.30.6= 0.960.2=10.50.4= 7.30.27= 0.540.6=0.610.39= 0.5628= 4.080.4= 109.4= 0.80.11= 7.2
7、12.8= 5.60.01=2.3100= 0.75100= 10.89=7.80.01= 5.40.6= 35= 70.62=120.5= 5.20.4= 12.20.2= 5.6100=0.413.7= 7.20.8= 840.21= 2.516= 1.7532.5= 165.07= 5.213= 1.020.2= 0.260.3= 8.40.02= 0.80.05= 12.60.03= 8.710.1= 210.21=0.80.13= 0.3417= 8.080.4= 0.52.2=1.244= 3.270.63= 72 7.2= 0.70.35= 0.71.40.480.04= 1.252.5= 5.55.5= 16.88=0.542.2= 3.50.05= 20.02= 0.2540=1.50.6= 0.320.8= 12.250.5= 46.552.5= 1.2588= 4.20.76= 0.48.625=0.270.3= 2.5101= 0.651010.65= 2.672.67=0.020.5= 3.60.3= 5.6100=7.80.01= 5.40.6= 1.50.6= 4.080.4=
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