help finding the correct numbers of sig figs and decimals

1) (183 x 0.017) + 850. = 853, a oxio FIF kee you 2) (12.7-8.3) 4.4 (18.5-2.2) 1663 12.78101 fo 3) (3.0 x 2.2) + (4 x 85) - 3.5 x 10' 4) (0.127 -0.038) 0.0445 12.0 5) 3.24x10 (187+27) 6) (438+825) 1.234x10 7) 4.02x10 1.4x10 +385 = 4.02x10 8) +385 = 2.87 1428575X10" = 2.91x10" 1.4x10 9) (14.8-12.5) 12.5 (0.01020)(4.3210) 10) (16-12) (83.4 - 27.4) 11) 0.0432 2-10