Scientific Notation and Exponents

Mr. Murphy introduces eighth-grade students to Module 1, covering integer exponents and scientific notation. The lesson begins with a review of integers and exponents, explaining their definitions and basic operations. Students will revisit exponent notation learned in fifth grade and explore multiplying exponents, exponents raised to exponents, and the concept of zero power. The module progresses to scientific notation, focusing on its application for estimating large and small numbers. Students will learn to perform mathematical operations using scientific notation and understand its significance. The course spans three weeks, including lessons and tests.

What is an integer?

• A whole number

• A complex number

• A decimal

• A fraction

How is 2 to the power of 3 calculated?

• 2 x 3

• 2 + 3

• 2 x 2 x 2

• 3 x 3

What is the base in the expression 5^3?

• 15

• 8

• 5

• 3

What does the zero power of a number equal?

• 0

• 1

• The number itself

• Infinity

What is the result of 10^0?

• 0

• 10

• 100

• 1

What is the purpose of scientific notation?

• To convert numbers to fractions

• To make numbers smaller

• To estimate large or small numbers

• To simplify addition

What happens when you multiply a number by 10 in terms of magnitude?

• The number decreases

• The number remains the same

• A zero is added to the end

• The number becomes a fraction

How do you multiply numbers in scientific notation?

• Divide the exponents

• Subtract the exponents

• Multiply the exponents

• Add the exponents

How do you add numbers in scientific notation?

• Add the coefficients and exponents

• Multiply the coefficients and exponents

• Add the coefficients, keep the exponents the same

• Add the exponents, keep the coefficients the same

What is the main advantage of using scientific notation?

• It changes the base of numbers

• It converts numbers to fractions

• It simplifies the representation of very large or small numbers

• It makes calculations more complex