Operations with Fractions in Word Problems

Miss Estus teaches how to solve word problems involving the addition and subtraction of fractions, focusing on cases with unlike denominators. The lesson includes a review of steps to find a common denominator, create equivalent fractions, and simplify results. Two example problems are solved: one involving addition and the other subtraction. The lesson concludes with tips on identifying clue words in word problems to determine the correct operation.

What is the main focus of the lesson introduced by Miss Estus?

• Converting fractions to decimals

• Dividing fractions

• Adding and subtracting fractions with unlike denominators

• Multiplying fractions

What is the first step in adding or subtracting fractions with unlike denominators?

• Subtract the denominators

• Find the least common multiple

• Convert fractions to decimals

• Add the numerators

What do you do after finding the least common multiple when adding fractions?

• Add the numerators directly

• Multiply the fractions

• Divide the fractions

• Make equivalent fractions

In the cherry pie example, what is the common denominator used?

• 10

• 25

• 15

• 20

How much of the cherry pie did Andy and April eat together?

• 3/5

• 2/3

• 11/15

• 1/2

What is the first step in solving the pumpkin pie subtraction problem?

• Multiply the fractions

• Convert the whole pie to a fraction

• Find a common denominator

• Add the fractions

How much of the pumpkin pie was left after Lesie ate?

• 4/5

• 2/5

• 3/5

• 1/5

Which word indicates an addition operation in a word problem?

• Decrease

• Difference

• Total

• Fewer

Which word suggests a subtraction operation in a word problem?

• Sum

• Increase

• Left

• Both

What should you do if a word problem mentions 'how much is left'?

• Add the fractions

• Multiply the fractions

• Divide the fractions

• Subtract the fractions