1) Round 0.00045678 to 3 significant figures. a) 0.00045 b) 0.000457 c) 0.0004568 d) 0.000456 2) Which of the following numbers has only 2 significant figures? a) 0.056 b) 1.230 c) 1560 d) 57.0 3) Round 797, 650 000 to 3 significant figures. a) 797,000,000 b) 797,650,000 c) 797,700 d) 798,000,000 4) How many significant figures are there in 206 cm? a) 1 b) 2 c) 3 d) 4 5) How many significant figures are there in the number 0.00450? a) 3 b) 4 c) 5 d) 6

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