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Example 2-2b Objective Compare and order decimals

Example 2-2b Vocabulary Equivalent decimals Decimals that name the same number

Example 2-2b Math Symbols <less than >greater than

Lesson 2 Contents Example 1Compare Decimals Example 2Order Decimals

Example 2-1a BASEBALL The table below lists the final winning percents for several American League baseball teams in Use > or < to compare New York’s percent with Cleveland’s percent. Source: Final Standings TeamPercent Standings New York0.594 Boston0.509 Cleveland0.562 Detroit /2

Example 2-1b Write the New York data 2001 Final Standings TeamPercent Standings New York0.594 Boston0.509 Cleveland0.562 Detroit /2 New York0.594 Write the Cleveland data, lining up the decimal with New York’s data Cleveland0.562

Example 2-1b Compare digits beginning at the left and work to the right 1/2 New York0.594 The zeros (0) are the same so go to the next digit Cleveland0.562 The fives (5) are the same so go to the next digit Since the digits are not the same, compare The 9 greater than the 6 9 > 6 So is greater than 0.562

Example 2-1b 1/2 New York0.594 Cleveland > 6 So is greater than Answer: New York had a higher percentage than Cleveland 2001 Final Standings TeamPercent Standings New York0.594 Boston0.509 Cleveland0.562 Detroit0.407 In a comparison, must use both teams in the answer and in the order the question asked Compare New York’s percent with Cleveland’s

Example 2-1d EXAMS In Mr. Smith’s math class, 29.65% of the students earned a grade of “A” at the end of the semester. In Mrs. Dempsey’s class, 29.85% of the students earned a grade of “A” at the end of the semester. Use > or < to compare the percent in Mr. Smith’s class with the percent in Mrs. Dempsey’s class. Answer: 1/2 Mr. Smith’s class percentage was less than Mrs. Dempsey’s class

Example 2-2a Order 25, 25.1, 24.36, and from least to greatest. 2/2 Write the first number 25 Since the other numbers have as many as 2 decimal places, annex 2 zeros after the decimal Write the second number 25.1 Annex a zero Write the third number Write the fourth number 25.03

Example 2-2a Order 25, 25.1, 24.36, and from least to greatest. 2/2 Compare beginning with the first digit on the left working to the right All the digits are the same so go to the next digit The 4 is smaller than the 5 so is the smallest number 24.36, Compare the next digits The 0 is smaller than the 1 so compare the 2 numbers with the zeros

Example 2-2a Order 25, 25.1, 24.36, and from least to greatest. 2/ , The 0 is smaller than the 1 so compare the 2 numbers with the zeros 0 is less than 3 so is smaller than , 25.00, 25.03, One number remains so it is the largest 24.36, 25.00, 25.03, Answer:

Example 2-2b Order 71, 71.04, 70.89, and 71.4 from least to greatest. Answer: 70.89, 71.00, 71.04, * 2/2

End of Lesson 2 Assignment Lesson 3:2 Comparing and Ordering Decimals All