Splash Screen. Lesson Menu Five-Minute Check (over Lesson 3–5) NGSSS Then/Now New Vocabulary Key Concept: Adding Unlike Fractions Example 1: Adding Unlike.

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Presentation transcript:

Splash Screen

Lesson Menu Five-Minute Check (over Lesson 3–5) NGSSS Then/Now New Vocabulary Key Concept: Adding Unlike Fractions Example 1: Adding Unlike Fractions Example 2: Add Fractions and Mixed Numbers Key Concept: Subtracting Unlike Fractions Example 3: Subtract Fractions and Mixed Numbers Example 4: Real-World Example: Add and Subtract Mixed Numbers

Over Lesson 3–5 A.A B.B C.C D.D 5-Minute Check 1 A.1 B. C. D.

Over Lesson 3–5 A.A B.B C.C D.D 5-Minute Check 2 A. B. C. D.

Over Lesson 3–5 A.A B.B C.C D.D 5-Minute Check 3 A.7 B. C. D.

Over Lesson 3–5 A.A B.B C.C D.D 5-Minute Check 4 A. B. C. D.

Over Lesson 3–5 A.A B.B C.C D.D 5-Minute Check 5 A.5 B. C. D.

Over Lesson 3–5 A.A B.B C.C D.D 5-Minute Check 6 A. B. C. D.

NGSSS MA.7.A.3.2 Add, subtract, multiply, and divide integers, fractions, and terminating decimals, and perform exponential operations with rational bases and whole number exponents including solving problems in everyday contexts. MA.8.A.6.4 Perform operations on real numbers (including integer exponents, radicals, percents, scientific notation, absolute value, rational numbers, and irrational numbers) using multi-step and real-world problems.

Then/Now You have already added and subtracted rational numbers with like denominators. (Lesson 3–5) Add unlike fractions. Subtract unlike fractions.

Vocabulary unlike fractions

Concept

Example 1 Adding Unlike Fractions Use 4 ● 7 or 28 as the common denominator. Rename each fraction with the common denominator. Add the numerators. Answer:

A.A B.B C.C D.D Example 1 A. B. C. D. Write in simplest form.

Example 2 Add Fractions and Mixed Numbers The LCD of 6 and 10 is 30. Rename each fraction with the LCD. A. Estimate = 1 Answer: Simplify.

Example 2 Add Fractions and Mixed Numbers Write the mixed numbers as improper fractions. The LCD of 8 and 3 is 24. B. Rename fractions using the LCD, 24.

Example 2 Add Fractions and Mixed Numbers Simplify.

A.A B.B C.C D.D Example 2 A. B. C. D.

A.A B.B C.C D.D Example 2 B. A. B. C. D.

Concept

Example 3 Subtract Fractions and Mixed Numbers The LCD is 16. A. Rename using the LCD. Answer: Subtract.

Example 3 Subtract Fractions and Mixed Numbers Write as improper fractions. B. The LCD is 21. Answer: Rename using the LCD. Simplify.

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

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

Example 4 Add and Subtract Mixed Numbers Understand You know the total distance Juyong jogged and the distances on two days.

Example 4 Add and Subtract Mixed Numbers Simplify. Simplify

Example 4 Add and Subtract Mixed Numbers Check

A.A B.B C.C D.D Example 4 GARDENING Howard’s tomato plants grew a total of inches during the first three weeks after sprouting. If they grew inches during the first week and inches during the second week, how much did they grow during the third week after sprouting? A.B. C.D.

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