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Five-Minute Check (over Lesson 9–2) Main Idea and Vocabulary Example 1: Find Equivalent Fractions by Multiplying Example 2: Real-World Example Example 3: Find a Missing Number Lesson Menu
I will write a fraction that is equivalent to a given fraction. equivalent fractions Main Idea/Vocabulary
Find Equivalent Fractions by Multiplying Find two fractions that are equivalent to . 3 4 Multiply by equivalent forms of one, such as and . 3 4 2 Multiply by . 3 4 2 Multiply by . 3 4 × = = × = = 3 4 2 3 × 2 6 8 3 4 3 3 × 3 9 12 4 × 2 4 × 3 Answer: So, and are both equivalent to . 9 12 6 8 3 4 Example 1
What two fractions are equivalent to ? 4 5 A. , 6 8 10 12 B. , 12 15 16 20 C. , 21 30 7 8 A B C D D. , 16 20 7 8 Example 1
Multiply by equivalent forms of one, such as and . Reynaldo measured the width of a dime and found it to be inch. Find two equivalent measurements for the width in inches. 5 8 Multiply by equivalent forms of one, such as and . 5 8 2 3 Example 2
Answer: So, and are both equivalent to . Multiply by . 5 8 2 Multiply by . 5 8 3 × = = × = = 5 8 2 5 × 2 10 16 5 8 3 5 × 3 15 24 8 × 2 8 × 3 Answer: So, and are both equivalent to . 15 24 5 8 10 16 Example 2
What two fractions are equivalent to ? 6 7 A. , 12 14 9 10 B. , 12 14 18 21 C. , 18 21 24 25 A B C D D. , 21 24 32 28 Example 2
Find the number for that makes the fractions = equivalent. Find a Missing Number Find the number for that makes the fractions = equivalent. 3 5 20 = = THINK What number times 5 equals 20? 3 5 3 × ? 20 5 × ? = = 5 × 4 = 20, so multiply the numerator by 4. 3 5 3 × 4 20 12 5 × 4 12 20 Answer: The missing number is 12. So, = . 3 5 Example 3
Find the number for that makes the fractions = equivalent. 2 3 27 12 14 16 18 A B C D Example 3
End of the Lesson End Lesson
Five-Minute Check (over Lesson 9–2) Image Bank Math Tool Chest Compare Fractions Resources
Tell whether 6 is prime or composite. (over Lesson 9–2) Tell whether 6 is prime or composite. prime composite A B Five Minute Check 1
Tell whether 13 is prime or composite. (over Lesson 9–2) Tell whether 13 is prime or composite. prime composite A B Five Minute Check 2
Tell whether 29 is prime or composite. (over Lesson 9–2) Tell whether 29 is prime or composite. prime composite A B Five Minute Check 3
Tell whether 49 is prime or composite. (over Lesson 9–2) Tell whether 49 is prime or composite. prime composite A B Five Minute Check 4
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