Rewriting Expressions and Fractions

The video tutorial by Mr. PI covers lesson 6 of module 3 in Eureka Math for grade 7. It begins with an introduction and an opening exercise on mixed fractions. The tutorial then progresses through various examples, including solving problems with mixed fractions, rewriting expressions in standard form, and adjusting prices with tax considerations. The video also explores using rational numbers and modeling equivalent expressions. Each section includes exercises for students to practice and apply the concepts learned.

What is the main question addressed in this lesson?

• How to solve equations with variables

• How to calculate the perimeter of a rectangle

• How to rewrite an expression with a mixed fraction

• How to find the area of a circle

If Teri weighs 40 kg and Janis weighs 2 and 3/4 kg less, what is their combined weight?

• 80 kg

• 77 and 1/4 kg

• 77 kg

• 78 kg

What is the first step in subtracting mixed fractions?

• Add the fractions

• Convert them to improper fractions

• Find the least common multiple

• Multiply the fractions

How much beef does Mr. Jackson have left after cooking 3/4 of 1/3 pound?

• 1/5 pound

• 1/4 pound

• 2/5 pound

• 1/3 pound

What does it mean to rewrite an expression in standard form?

• To add all numbers together

• To collect like terms

• To multiply all terms

• To divide all terms by the same number

How is the price of a shirt adjusted in Example 2?

• Increased by $10

• Doubled and then halved

• Tripled and then reduced by $5

• Reduced by $10 and then halved

What is the first step in simplifying expressions in Example 3?

• Multiply all terms

• Find a common denominator

• Add all terms

• Subtract all terms

How can x/20 be rewritten using rational numbers?

• x/10

• 20x

• 1/20 * x

• 1x/20

What is the simplified form of 25/20?

• 5/4

• 1/4

• 2/5

• 1/5