1. State the number of significant figures in each of the following: a) 1.234 m b) 0.03 hours c) 10.05 days d) 423 000.0 m/s e) 506 000 J F) 6.402 0 W/m2 2. Round off the following to two significant figures: a) 11.35 mm b) 123.49 V c) 560 721 cm2 d) 424.94 s e) 0.003 141 592 6 m f) 623 000 kg 3. Compute the following and provide answers with the proper number of significant digits. a) (3.524 m) x (1.1 m) b) (28.0 m2 ) (7.0 m) (5.10 cm2) c) d ) (265 m) x (43.82 m) x (0.00638 m) (2.98743 cm) (2.4 m) x (3.67 m) e) 7 010 m + 112 m f) 0.027 00 m + 0.0342 m 8.2 cm g) cm h) (0.000 65 m - 0.000 63 -m) X 156 s 1.35 s + 2.445