Multiplying and Dividing Real Numbers

This lesson covers the basics of multiplication and division, emphasizing that division is a form of multiplication involving fractions. It explains multiplication as repeated addition and discusses properties of multiplication, including the multiplication property of negative one, zero, and inverse properties. The lesson also covers rules for multiplying and dividing signed numbers, highlighting the importance of keeping track of negative signs. Different symbols for multiplication and division are introduced, with a focus on how these operations are represented in algebra.

What is the main concept discussed in this lesson?

• Exponents and Roots

• Multiplication and Division

• Addition and Subtraction

• Fractions and Decimals

Tags

CCSS.6.EE.A.1

How is multiplication defined in this lesson?

• Repeated subtraction of the same number

• Subtracting different numbers

• Repeated addition of the same number

• Adding different numbers together

Tags

CCSS.3.OA.A.1

What is the result of multiplying any number by zero?

• Zero

• One

• Negative one

• The number itself

Tags

CCSS.3.OA.B.5

What happens when you multiply a number by negative one?

• The number becomes zero

• The number becomes positive

• The number becomes its opposite

• The number remains the same

Tags

CCSS.7.NS.A.1B

What is the inverse of the number 3?

• 3

• 1/3

• 1

• 3/1

How do you find the inverse of a fraction?

• Add the numerator and denominator

• Subtract the numerator from the denominator

• Flip the numerator and denominator

• Multiply the numerator and denominator

What is the product of two negative numbers?

• A positive number

• A negative number

• Zero

• The same negative number

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of dividing two numbers with the same sign?

• A negative number

• Zero

• A positive number

• The larger number

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Which symbol is commonly used to show multiplication in algebra?

• /

• x

• ÷

• •

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

How is division typically shown in algebra?

• Using a dot

• Using parentheses

• Using a fraction

• Using the division symbol (÷)

Tags

CCSS.7.NS.A.2B