University:
High School
Course:
High School Mathematics
Academic year:

2022
Views:

147

Pages:

1
Author:

Layton Liu

Unit 2 Quiz Study Guide – Sig Figs & Sci Not – ANSWER KEY 1. How many significant figures are in each of the following numbers? 11,235 ‐5 570,300. ‐6 117.00 ‐5 103.50 ‐5 2020 ‐3 57,000.0 ‐6 0.00200 ‐3 0.012 ‐2 2. Round each of the following to 3 significant figures 42.853 = 42.9 81,250 = 81,300 0.01438 = 0.0144 50.0051 = 50.0 630 = 630. 4155 = 4160 3. Perform the following operations, and use the correct number of significant figures in your answer. 51 x 70.113 = 3575  3600 98.002 ÷ 0.012 = 8166  8200 100. + 51.11 = 151.11  151 52.350 – 2.30 = 50.05 30.1 ÷ 0.0010 = 3010  3.0 x 103 45.34 – 2.0400 = 43.30 4. Which measurement is reported to a greater degree of accuracy: 0.009 cm or 0.00900 cm? 0.00900 cm 5. Convert the following to scientific notation. 8750 = 8.75 x103 0.00810 = 8.10 x10‐3 190010 = 1.9001 x105 0.00054 = 5.4 x10‐4 6. Convert the following to standard form. 5.78 x 103 = 5780 8.010 x 10‐4 = 0.0008010 9.250 x 104 = 92500 4.7 x 10‐5 = 0.000047 6.6 x 10‐8 = 0.000000066 7. Perform the following operations, and report your answers in scientific notation: (5.0 x 105) x (6.0 x 106) = 3.0 x 1012 (7.0 x 104) + (8.0 x 105) = 8.7 x 105 (6.09 x 10‐1) x (9.08 x 105) = 5.53 x 105 (1.65 x 101) – (5.24 x 102) = ‐5.08 x 102 (8.17 x 102)(8.70 x 105) = 1.69 x 104 (4.20 x 104) (9.19 x 107)(1.79 x 101) = 2.42 x 10‐4 (8.17x 104)(8.32 x 107) 150 = 1.5 x102