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    Perform the following calculations and report the answer to the proper number of significant figures:6.50 x 10-7 - 5.603 x 10-86.50 x 107 + 5.603 x 108(5.5 x 10-5)2(3.52 x 25)/91.7513.6 + 0.03156.2/0.62

2005-11-14 09:12:19 · 2 個解答 · 發問者 Frank 7 in 科學 其他:科學

2 個解答

6.50 x 10^-7 - 5.603 x 10^-8 = 5.94 x 10^-7 (三位有效數字)
6.50 x 10^7 + 5.603 x 10^8 = 6.25 x 10^8 (三位有效數字)
(5.5 x 10^-5)^2 = 3.0 x 10^-9 (二位有效數字)
(3.52 x 25)/91.75 = 9.59 (三位有效數字)
13.6 + 0.03 = 10 (一位有效數字)
156.2/0.62 = 250 (二位有效數字)

2005-11-16 03:26:21 · answer #1 · answered by 米奇 4 · 0 0

如果用計算機的話就按MODE MODE MODE 2 SCI 選擇位數 這樣也很方便
我是用CASIO fx-350MS

2005-12-11 01:46:20 · answer #2 · answered by 阿龍哥 1 · 0 0

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