Name: __________________________________ Date: ________________ Class period: ______ Significant Figure Practice Homework! (...Because practice makes perfect! ) Directions: Please write the correct number of significant figures in each number. 2000 _______ 0.00700 _______ 0.0030 _______ 50.0 _______ 4607 10 _______ 0.006 _______ 100257 _______ 23,450 _______ 243.0 _______ 0.50 _______ 0.00230 _______ 4050 _______ 500 _______ 5009 _______ 12.060 _______ 0.0089 _______ 12.670 _______ _______ Directions: Please calculate each expression and round each answer to the correct number of significant figures. 25.0 – 10.21 = _______ 6 / 3.269 = _______ 2x10-2 x 1.346 = _______ 0.008 + 78.02 = _______ 120.70 – 3.525 = _______ 65.092 x 0.7809 = _______ 5 + 24.6 = _______ 54.34 – 14.0 = _______ 7.00 x 6.0 = _______ 6.3 x 2.903 = _______ 4.59 / 2 = _______ 56 + 7.59 = _______ 34.4732 + 393.06 = _______ 6.92x103 / 9.07 = _______ 0.0062 / 2 = 0.567 – 0.4 = _______ _______ Copyright © 2015 MsRazz ChemClass