Perform the following calculations. Unless the result is known exactly, round to the appropriate number of significant digits. (Assume all integer values are exact.)
1 2.5 * 0.3456
2 12 * 0.345
3 50 * 0.1234
4 2.456 * 2.4
5 0.002 / 4.234
6 12.02045 / 2
7 10 * 20 * 2
8 6.23000 * 2.34
1 2.5 * 0.3456 = 0.864 = 0.86 (2 significant digits)
2 12 * 0.345 = 4.14 = 4.14 (3 significant digits)
3 50 * 0.1234 = 6.17 = 6.17 (4 significant digits)
4 2.456 * 2.4 = 5.8944 = 5.9 (2 significant digits)
5 0.002 / 4.234 = 0.000472238 = 0.0005 (1 significant digit)
6 12.02045 / 2 = 6.010225 = 6.010225 (7 significant digits)
7 10 * 20 * 2 = 400 = 400 (Exactly)
8 6.23000 * 2.34 = 14.5782 = -14.6 (3 significant digits)
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