Mathematical Word Problems and Concepts

This video tutorial covers various math problems for seventh-grade students, including percentage increase and decrease, population changes, distance calculations using fractions, circle area approximation, and understanding proportional relationships. Each problem is explained step-by-step, providing a comprehensive understanding of the concepts. The video concludes with a call to action for viewers to support the channel.

If a bakery used 240 kg of butter last month and increased its usage by 25% this month, how much butter did it use this month?

• 300 kg

• 260 kg

• 280 kg

• 320 kg

The price of oranges decreased by 20% from $1.75 per pound. What is the new price per pound?

• $1.40

• $1.50

• $1.45

• $1.35

A herd of bison increased by 10% from 550 bison last year. How many bison are there this year?

• 600

• 595

• 605

• 615

If a herd of bison decreased by 10% to 550 bison this year, how many bison were there last year?

• 605

• 600

• 625

• 615

Elena walked 12 miles and then a quarter of that distance. How far did she walk in total?

• 16 miles

• 15 miles

• 14 miles

• 13 miles

What is a quarter of 12 miles?

• 3 miles

• 5 miles

• 4 miles

• 2 miles

If the circumference of a circle is 600 meters, what is an approximate area of the circle?

• 26,000 m²

• 28,000 m²

• 32,000 m²

• 30,000 m²

What is the formula for the area of a circle?

• πr²

• 2πr

• πd

• r²

If a snail moves at 3 inches per minute, how far will it be from the rock after 9 minutes?

• 27 inches

• 21 inches

• 30 inches

• 24 inches

What does the number 3 represent in the equation d = 3t?

• Speed of the snail

• Distance from the rock

• Time taken

• Constant of proportionality