NC EOG Review 7th grade Math

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or space that maintains the proportions of the original, using a specific ratio to convert measurements.

Front

If a scale is 1 inch = 5 feet, how do you find the length in inches of an object that is 18 feet long?

Back

To find the length in inches, divide the actual length by the scale factor: 18 feet ÷ 5 feet/inch = 3.6 inches.

Front

What is sales tax?

Back

Sales tax is a percentage of the sale price added to the cost of goods or services, collected by the seller and paid to the government.

Front

How do you calculate the sales tax paid on an item?

Back

To calculate sales tax, subtract the original price from the total price, then divide by the original price and multiply by 100 to get the percentage.

Front

What is the cost per ounce?

Back

Cost per ounce is the total cost of an item divided by the number of ounces it contains, used to compare prices of different sizes.

Front

How do you find the difference in cost per ounce between two products?

Back

Calculate the cost per ounce for each product, then subtract the smaller cost from the larger cost.

Front

What is a reduction in size in copying?

Back

A reduction in size means that the copied image is smaller than the original, often expressed as a ratio or percentage.

Front

If a 12-inch line segment is reduced to 10.5 inches, what is the scale factor?

Back

The scale factor is 10.5 inches ÷ 12 inches = 0.875.

Front

How do you convert map measurements to actual distances?

Back

To convert map measurements to actual distances, multiply the measurement on the map by the scale factor (e.g., 1 cm = 3 km).

Front

If 1 cm on a map represents 3 km, what is the actual distance for 5.4 cm?

Back

Multiply 5.4 cm by 3 km/cm to get 16.2 km.