12/19 (math 7)

Front

What is the formula to calculate the discount on an item?

Back

Discount = Original Price × Discount Rate

Front

If an item costs $1600 and is discounted by 10%, what is the new price?

Back

New Price = $1600 - ($1600 × 0.10) = $1440

Front

What is the formula for the area of a circle?

Back

Area = π × (radius)²

Front

If the diameter of a Ferris Wheel is 50 meters, what is its radius?

Back

Radius = Diameter / 2 = 50 / 2 = 25 meters

Front

What is the approximate area of a circle with a diameter of 50 meters?

Back

Area ≈ 3.14 × (25)² ≈ 1963 square meters

Front

What is the formula to calculate the circumference of a circle?

Back

Circumference = π × Diameter

Front

If the diameter of a Ferris Wheel is 39 yards, what is the circumference?

Back

Circumference ≈ 3.14 × 39 ≈ 122 yards

Front

What is a tip in a restaurant context?

Back

A tip is a small amount of money given to service workers for their service, usually a percentage of the total bill.

Front

If a dinner costs $49.88 and a 25% tip is added, what is the total cost?

Back

Total Cost = $49.88 + ($49.88 × 0.25) = $62.35

Front

What is the rate of catching fish if 6 fish are caught in 1.5 hours?

Back

Rate = Total Fish / Total Time = 6 fish / 1.5 hours = 4 fish per hour