Understanding Exponents and Powers

This video tutorial on pre-algebra lesson 15 introduces exponents, explaining their components such as base and exponent. It covers how to write repeated multiplication in exponent form, special rules for exponents 0 and 1, and terminology like 'squared' and 'cubed'. The lesson includes practice exercises for writing and reversing exponent forms, evaluating expressions with exponents, and simplifying calculations with powers of 10.

What is the main focus of this pre-algebra lesson?

• Solving linear equations

• Learning about exponents

• Graphing functions

• Understanding fractions

How can you express 3 multiplied by itself seven times using exponents?

• 7^7

• 3^3

• 7^3

• 3^7

In the expression 5^3, what is the base?

• 5

• 3

• 15

• 8

What is the value of any number raised to the power of 1?

• 0

• 1

• The number itself

• The number squared

What does it mean when a number is squared?

• Raised to the power of 2

• Divided by 2

• Multiplied by 10

• Raised to the power of 3

How would you say 8^4 using exponent terminology?

• Eight to the second power

• Eight squared

• Eight cubed

• Eight to the fourth power

How would you write 7 multiplied by itself five times in exponent form?

• 5^5

• 7^7

• 5^7

• 7^5

What is the exponent in the expression 9^2?

• 18

• 11

• 2

• 9

How do you evaluate 2^7?

• Add 7 two times

• Multiply 7 by itself 2 times

• Add 2 seven times

• Multiply 2 by itself 7 times

What is the shortcut for calculating 10^4?

• Add 10 four times

• Write 1 followed by 4 zeros

• Write 4 followed by 10 zeros

• Multiply 10 by 4