Adding and Subtracting Decimals

Adding and Subtracting Decimals Example 1 Add 13.43 + 8.624 13.43 + 8.624 13.430 + 8.624 22.054 Note: When Adding and Subtracting Decimals it is imperative to line up the decimals! Original Expression 1 1 Add decimals Final answer

Adding and Subtracting Decimals Solve the following problems. 1.) 8.5 + 2.13 2.) 16.9 + 18.575 3.) 11.8 – 3.55 4.) 16.907 – 13.21

Adding and Subtracting Decimals Solve the following problems using mental math. 1.) 1.8 + 0.2 = 2.) 3 - 0.8 = 3.) 4.5 – 0.7 = 4.) 10.2 + 1.6 =

Adding and Subtracting Decimals Evaluating Decimal Expressions Example: 3.801 + x when x = 5.29 3.801 + 5.29 3.801 + 5.290 9.091 Try these: Evaluate the following expressions for the given variable’s value. 1.) 7.52 – s when s = 2.9 2.) 6.39 + 2(6) + b when b = 3.95 Original Expression Substitute value of variable Add decimals Final answer

Adding and Subtracting Decimals Real-Life Application Drew Brees and Mitchell Trubitsky’s current 2018 quarterback rating are 126.9 and 97.7, respectively. What is the difference between their two ratings?

Adding and Subtracting Decimals Real-Life Application 2016 U.S. Olympic Trials – Day 2 Laurie Hernandez’s Final Scores What was Laurie Hernandez’s combined finals score at Day 2 of the 2016 U.S. Olympic Trials? Simone Biles’ combined finals score at Day 2 of the 2016 U.S. Olympic Trials was 61.4. How much greater was Biles’ score compared to Hernandez’s? Event Score Floor exercise 14.7 Balance beam 15.15 Vault 15.7 Uneven bars 14.75