7th Grade NSCAS Math Review #1

Front

What is the formula for calculating the area of a rectangle?

Back

Area = length × width

Front

If a jacket costs $85 and is on sale for 40% off, how do you calculate the sale price?

Back

Sale Price = Original Price - (Original Price × Discount Rate) = $85 - ($85 × 0.40) = $51

Front

What does the inequality s ≤ 35 represent in the context of speed limits?

Back

It means that the speed (s) of the car can be 35 miles per hour or less.

Front

How do you find the total area of a composite figure?

Back

Add the areas of the individual shapes that make up the composite figure.

Front

What is the area of a square with a side length of 4 ft?

Back

Area = side × side = 4 ft × 4 ft = 16 ft²

Front

What is the meaning of 40% off in terms of discounts?

Back

It means you pay 60% of the original price.

Front

How do you convert a percentage to a decimal?

Back

Divide the percentage by 100. For example, 40% = 0.40.

Front

What is the area of a triangle with a base of 10 cm and a height of 5 cm?

Back

Area = (base × height) / 2 = (10 cm × 5 cm) / 2 = 25 cm²

Front

What is the formula for the area of a circle?

Back

Area = π × radius²

Front

If a car travels at a speed of 35 miles per hour, how far will it travel in 2 hours?

Back

Distance = speed × time = 35 miles/hour × 2 hours = 70 miles.