1. 4.5×0.251/8.04×40.0
Express your answer using correct number of significant figures.
2.8×10-5×5.21×104×6.70×10-8
Express your answer using correct number of significant figures.
3.5.70×102×2.64×10-3×2.966×10-3×35.5
Express your answer using correct number of significant figures.
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