Mathematics Flashcard

Front

What is a tip?

Back

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

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage, multiply the number by the percentage (in decimal form). For example, to find 20% of $45, multiply 45 by 0.20.

Front

What does a scale drawing represent?

Back

A scale drawing is a representation of an object where the dimensions are proportionally reduced or enlarged according to a specific ratio.

Front

If a blueprint has a scale of 1 inch = 6 feet, how do you find the actual size?

Back

Multiply the measurement on the blueprint by the scale factor. For example, 8 inches on the blueprint equals 8 x 6 = 48 feet in reality.

Front

What is a discount?

Back

A discount is a reduction in the price of an item, often expressed as a percentage of the original price.

Front

How do you calculate the final price after a discount?

Back

To find the final price after a discount, subtract the discount amount from the original price. For example, for a 15% discount on $60, calculate 60 x 0.15 = $9, then $60 - $9 = $51.

Front

What is a commission?

Back

A commission is a fee paid to a salesperson based on the sales they make, usually expressed as a percentage of the total sales.

Front

How do you calculate commission earned?

Back

To calculate commission, multiply the total sales by the commission rate. For example, for $500 in sales at a 10% commission, calculate 500 x 0.10 = $50.

Front

What is a scale in measurements?

Back

A scale is a ratio that compares a measurement on a drawing or model to the actual measurement of the object.

Front

If a scale is 1 cm = 25 cm, how do you find the length on the drawing?

Back

To find the length on the drawing, divide the actual length by the scale factor. For example, for a 400 cm car, calculate 400 ÷ 25 = 16 cm.