1. 2.3×10−10

A 0.23 μL

B 23 ML

C 2.3 μL

D 0.23 nL

E 0.023 nL

F 2.3 nL

2. 4.7×10−6g

A 0.047 Mg

B 4.7 mg

C 47 ng

D 47 mg

E 0.47 μg

F4.7 μg

3. 1.85×10−12m

A 0.185 cm

B0.185 μm

C0.185 pm

D185 nm

E1.85 pm

F18.5 μm

4.16.7×106s

A16.7 Ms

B16.7 ms

C1.67 Ms

D16700 ns

E1670 μs

F0.167 μs

5. 15.7×103g

A15.7 mg

B1.57 kg

C1570 ng

D1570 μg

E157 mg

F15.7 kg

6. 1.34×10−3m

A0.134 km

B134 nm

C0.134 μm

D1.34 mm

E0.134 mm

F1340 pm

7.1.84×102cm

A18.4 nm

B0.184 m

C184 μm

D0.184 mm

E1.84 m

F1.84 mm