Exponent Rules and Basic Fractions

The video tutorial covers various math problems, including calculating percentage decrease, understanding negative exponents, subtracting fractions, calculating sales commission, estimating fractions as percentages, and applying exponent rules. Each problem is explained step-by-step, demonstrating the mathematical concepts and calculations involved.

What is the percentage decrease when a price drops from $20 to $17?

• 25%

• 20%

• 15%

• 10%

If a shirt originally costs $20 and is now $17, what is the dollar amount of the decrease?

• $5

• $4

• $3

• $2

What is 2 to the power of negative 4 equivalent to?

• 1/64

• 1/8

• 1/16

• 1/32

How do you express 2 to the power of -4 as a fraction?

• 1/4

• 1/8

• 1/16

• 1/32

What is the result of 3/4 minus 1/6?

• 11/12

• 7/12

• 5/12

• 1/2

To subtract 1/6 from 3/4, what common denominator should be used?

• 12

• 6

• 10

• 8

A salesperson earns a 2% commission on a $300 sale. How much is the commission?

• $3

• $5

• $6

• $10

If a salesperson makes 2% commission, how much do they earn on a $300 sale?

• $7

• $5

• $6

• $4

What is the simplified result of 2^6 * 2^4 / 2^5?

• 2^3

• 2^5

• 2^6

• 2^4

Using exponent rules, what is 2^6 multiplied by 2^4 divided by 2^5?

• 64

• 32

• 16

• 128