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5.63÷7.8≈0.72 28.28÷0.4=70.7 0.303÷5=0.0606
13.【解答】解:1.57÷3.9≈0.40 0.58×0.24≈0.14 70.7÷33=2.1
14.【解答】解:★64.8÷1.8=36 ★8﹣6.69≈1.3; 0.65×3.84≈2.5 15.
【解答】解:9.4÷11=0.8 *144÷12=12 14.2÷11=1.2
16.【解答】解:75.6÷0.18=420 25.6÷0.032=800 2.78×1.8=5.004 5.63÷6.1≈0.92 10÷3.3≈3.
17.【解答】解:30÷7≈4.29 60.9÷3.2≈19.0 25÷9.9≈3
18.【解答】解:(1)6.21÷0.03=207(2)10.8÷45=0.24(3)8.54÷0.7=12.2(4)
72.9÷0.9=81
19.【解答】解:①50.96÷6.5=7.84②9.25÷3.7=2.5③15÷74=0.22 ④6.72÷4.2=1.6 20.【解答】解:(1)1.25÷0.25=5(2)8.4÷0.56=15(3)8.54÷0.7=12.2(4)78.6÷11=7.1
21.【解答】解:4.5×0.18=0.81 2.346÷2.3=1.02 70.3×3.6=253.08 5.06÷2.2=2.3
22.【解答】解:2.6×0.25=0.65 29.9÷0.46=65 *4.65÷1.3≈3.58
23.【解答】解:①24.6÷0.16=153.75②13.9÷6≈2.32③0.325÷1.5≈0.22 ④6.24÷0.8=7.8⑤18.3÷4=4.575⑥19.2÷6=3.2
24.【解答】解:7.05÷0.94=7.5 1.71÷3.8=0.45 4.83÷O.7=6.9 5.7÷9=0.6 38.2÷2.7=14.4 2.16÷18=0.12 1.8÷0.25=7.2
3.7÷2.2=1.6 25.【解答】解:
(1)3.9÷0.26=15(2)9.35÷3.4≈2.8(3)0.17÷0.11≈1.(4)0.168÷0.7=0.24(5)4.05÷18≈0.23(6)4.68÷5.4≈ 26.【解答】解:21.45÷15=1.43 49.04÷8=6.13 217.6÷34=6.4 11.7÷36=0.325 1.69÷26=0.65 54.81÷27=2.03 27.【解答】解:
①25.32÷0.15=168.80②1.03÷1.2≈0.86③1.07÷9.2≈0.12 ④9.45÷0.32≈29.53⑤13.51÷0.13≈103.92⑥17.96÷0.36≈49.89 28.【解答】解:47.04÷5.6=8.4 3.28×2.7=8.856 0.764×1.2≈0.92 52.92÷0.27=196 8÷1.28=6.25 15.36÷12=1.28
29.【解答】解:0.195÷0.13=1.5 3.6÷0.8=4.5 76.76÷0.76=101
6÷2.4=2.5 7.085÷0.65=10.9 9.72÷0.27=36
30.【解答】解:(1)0.38×0.23=0.0874(2)5.79×3.6=20.844 (3)4.6×0.25=1.15(4)6÷24=0.25(5)52.95÷75=0.706
(6)3.01÷7=0.43(7)4.95÷11=0.45(8)84.01÷31=2.71(9)0.646÷19=0.034 (10)4.7×0.59=2.773
31.【解答】解:(1)15.6÷12=1.3 (2)328÷16=20.5 (3)1.35÷27=0.05 (4)0.646÷19=0.034 32.【解答】解:45.15÷15=3.05 52.65÷13=4.05 15.75÷2.1=7.5 8.42÷0.6≈14.03 0.436÷0.2=2.18 9.25÷3.7=2.5
33.【解答】解:6.6÷4=1.65 43.5÷29=1.5 18.9÷27=0.7 1.35÷15=0.09 37.5÷6=6.25 28.6÷11=2.6
20.4÷24=0.85 3.64÷52=0.07
34.【解答】解:0.448÷32=0.014 14.3+6.7=21 3.8×0.26=0.988 11.32﹣8.95=2.37
35.【解答】解:(1)1.26÷1.8=0.7(2)64×5.04=322.56 (3)43.5÷0.29=150 (4)5.63÷0.13≈43.31(5)27.8÷2.5=11.12(6)9.8×0.75=7.35
36.【解答】解:5.02×4.8=24.096 1.35×320=432 26÷0.13=200 48÷2.3≈20.87
37.【解答】解:★0.756÷0.18═4.2 0.35×0.48=0.168 ★6.02﹣5.94=0.08
38.【解答】解:96.6÷42=2.3 7.79÷95=0.082; ★6.3÷0.42=15 7÷0.35=20 0.14÷0.08=1.75 42÷8=5.25