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Compare and Order Rational Numbers 7 th Grade Math Lesson Objective: Students will compare and order fractions and decimals.

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Presentation on theme: "Compare and Order Rational Numbers 7 th Grade Math Lesson Objective: Students will compare and order fractions and decimals."— Presentation transcript:

1 Compare and Order Rational Numbers 7 th Grade Math Lesson Objective: Students will compare and order fractions and decimals.

2 Vocabulary Rational Number –Any number that can be written as a fraction –Examples: whole numbers, integers, fractions, decimals and percents

3 Compare Rational Numbers Use, or = to make the statement true. -5 __ 3 -4 __ -6 30-5-40-6 <>

4 Compare Rational Numbers Use, or = to make the statement true. ¾ __ ¼ -1 5 / 6 __ -1 1 / 6 > 10¼ ¾-1 1 / 6 -2-1 5 / 6 <

5 Whiteboard Practice Use, or = to make the statement true.

6 Least Common Multiple If the fractions are unlike, find a common denominator to compare them. 12 x 1 = 12 12 x 2 = 24 12 x 3 = 36 18 x 1 = 18 18 x 2 = 36

7 Compare Rational Numbers Use, or = to make the statement true. > so>

8 Whiteboard Practice Use, or = to make the statement true.

9 Real World Example In Mr. Huangs math class, 6 out of 32 students own roller shoes. In Mrs. Trevinos math class, 5 out of 29 students own roller shoes. In which class does a greater fraction of students own roller shoes? Mr. Huang 6 ÷ 32 = Mrs. Trevino 5 ÷ 29 = 0.18750.1724

10 Whiteboard Practice The table shows hoe much copper is in each type of coin. Which coin contains the greatest amount of copper? CoinAmount of Copper Dime12/16 Nickel3/4 Penny1/400 Quarter23/25

11 Whiteboard Practice Gracia and Jim were shooting free throws. Gracia made 4 out of 15 free throws. Jim missed 6 out of 16 free throws. Who made the free throw a greater fraction of the time?

12 Ordering Rational Numbers List the numbers 3.44, π, 3.14, and 3.4 in order from least to greatest. 3.440, 3.141, 3.140, 3.444 1. Write all numbers to the same place value. 2. Order the numbers according to directions. 3.1403.1413.4403.444 or 3.14, π, 3.44, 3.4

13 Whiteboard Practice Order each set of numbers from least to greatest. 0.23, 0.19, 1 / 5 8 / 10, 0.81, 0.805 -1.4, -1 1 / 25, -1.25 -0.615, - 5 / 8, -0.62


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