Main Idea and New Vocabulary NGSSS Key Concept
Main Idea and New Vocabulary NGSSS Key Concept: Add or Subtract Unlike Fractions Example 1: Add Unlike Fractions Example 2: Subtract Unlike Fractions Example 3: Real-World Example Five-Minute Check
• Add and subtract fractions with unlike denominators. • unlike fractions
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.
Add Unlike Fractions The least common denominator of and is 20. Rename using the LCD, 20. Add the fractions. Simplify.
Add Unlike Fractions Answer:
A. B. C. D.
Subtract Unlike Fractions Rename using the LCD, 30. Subtract the fractions. Simplify.
Subtract Unlike Fractions Answer: Check by adding
A. B. C. D.
PET ADOPTION Use the table to find the fraction of adopted dogs in one town that are either golden retrievers or mixed breeds. The least common denominator of and is 25.
Rename using the LCD, 25. Add the fractions. Simplify. Answer: So, of the adopted dogs are either golden retrievers or mixed breeds.
MARBLES Use the table to find the fraction of marbles that are red or green. A. B. C. D.
Subtract. Write in simplest form. A. 1 C. B. D.
Add. Write in simplest form. A. C. B. D.
Evaluate the expression A. B. C. D. if s = .
Evaluate the expression 1 – r if r = A. 1 B. 1 C. D. – .
Jared and his friend Andre ordered a pizza. Jared ate of the pizza and Andre ate of the pizza. How much more of the pizza did Jared eat? A. B. C. D. 1
Ellen has of a jar of jelly. After she makes some peanut butter and jelly sandwiches, of the jar of jelly is left. What part of the jar of jelly did Ellen use? A. C. B. D.
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