1.(1)0.001或1/1000 (2)0.0001或1/10000 (3)0.2或1/5 (4)0.0021或21/10000
2.(1)10-3 (2)10-6 (3)9-1(或3-2) (4)64-1(或2-6或8-2或4-3)
3.(1)1 (2)1/8 (3)1.1 (4)15/16
试卷导航1.(1)0.001或1/1000 (2)0.0001或1/10000 (3)0.2或1/5 (4)0.0021或21/10000
2.(1)10-3 (2)10-6 (3)9-1(或3-2) (4)64-1(或2-6或8-2或4-3)
3.(1)1 (2)1/8 (3)1.1 (4)15/16
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