1.Express 0.000457 in scientific notation?
A.457×10-⁶
B.4.57×10-⁴
C.4.57×10⁴
D.457×10⁶
2.Convert 2.4×-³ to standard notation.
A.0.0024
B.0.024
C.0.24
D.2400
3.The scientific notation of the number 1200 is_____
A.1.2×10-³
B.12×10-³
C.1.2×10³
D.12×10²
A.457×10-⁶
B.4.57×10-⁴
C.4.57×10⁴
D.457×10⁶
2.Convert 2.4×-³ to standard notation.
A.0.0024
B.0.024
C.0.24
D.2400
3.The scientific notation of the number 1200 is_____
A.1.2×10-³
B.12×10-³
C.1.2×10³
D.12×10²
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