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Splash Screen

Five-Minute Check (over Lesson 4–5) Main Idea and Vocabulary Key Concepts: Compare Two Fractions Example 1: Compare Fractions Example 2: Compare Mixed Numbers Example 3: Order Fractions Example 4: Compare Fractions to Solve a Problem Lesson Menu

Compare and order fractions. least common denominator (LCD) Main Idea/Vocabulary

KC1

Replace the ● with <, >, or = to make a true sentence. Compare Fractions Replace the ● with <, >, or = to make a true sentence. Step 1 The LCM of the denominators, 21 and 7, is 21. So, the LCD is 21. Step 2 Write an equivalent fraction with a denominator of 21 for each fraction. ×1 ×3 Example 1

Compare Fractions Step 3 Answer: Example 1

Replace the ● with <, >, or = to make a true sentence. B. > C. = A B C Example 1

Replace the ● with <, >, or = to make a true sentence. Compare Mixed Numbers Replace the ● with <, >, or = to make a true sentence. Since the whole numbers are the same, compare Step 1 The LCM of the denominators, 3 and 6, is 6. So, the LCD is 6. Example 2

Compare Mixed Numbers Step 2 Write an equivalent fraction with a denominator of 6 for each fraction. ×2 ×1 Step 3 , since 2 = 2. Answer: Example 2

Replace the ● with <, >, or = to make a true sentence. B. > C. = A B C Example 2

Order the fractions and from least to greatest. Order Fractions Order the fractions and from least to greatest. The LCD of the fractions is 15. So, rewrite each fraction with a denominator of 15. ×5 ×3 ×1 ×3 Example 3

Order Fractions Answer: Example 3

A. B. C. D. A B C D Example 3

Compare Fractions to Solve a Problem According to the table, how is most land in the United States used? A as arable land B as permanent pastures C as forest and woodland D B and C are equal. Example 4

Compare Fractions to Solve a Problem Read the Item You need to compare the fractions. Solve the Item Rewrite the fractions with the LCD, 100. ×1 ×25 ×10 ×2 Answer: C Example 4

A. lengthen the school year B. shorten the school year According to the survey data, what did most people say should be done with the length of the school year? A. lengthen the school year B. shorten the school year C. keep the length the same D. A and B are equal. A B C D Example 4

End of the Lesson End of the Lesson

Five-Minute Check (over Lesson 4–5) Image Bank Math Tools Animation Menu Greatest Common Factor Resources

4-2 Equivalent Fractions 4-9 Ordered Pairs and Functions Animation Menu

Find the LCM of 2 and 4. A. 2 B. 4 C. 6 D. 8 (over Lesson 4-5) A B C D Five Minute Check 1

Find the LCM of 12 and 8. A. 4 B. 8 C. 12 D. 24 (over Lesson 4-5) A B Five Minute Check 2

Find the LCM of 10 and 25. A. 50 B. 25 C. 5 D. 2 (over Lesson 4-5) A B Five Minute Check 3

Find the LCM of 14 and 21. A. 6 B. 7 C. 28 D. 42 (over Lesson 4-5) A B Five Minute Check 4

Find the LCM of 4, 9, and 12. A. 9 B. 12 C. 36 D. 72 (over Lesson 4-5) Five Minute Check 5

(over Lesson 4-5) One street light flashes every 6 seconds and another flashes every 4 seconds. If they just flashed at the same time, how many seconds will go by until they flash at the same time again? A. 4 seconds B. 6 seconds C. 8 seconds D. 12 seconds A B C D Five Minute Check 6

End of Custom Shows