Multiplication

Multiplication

A Fast Way to Add Numbers

Multiplication is a fast way to add the same numbers.

Lesson

• 3+3+3+3+3+3=18

• The problem above involves adding the number 3 multiple times to get the sum 18.

• Instead of adding 3 multiple times to get 18, we are going to multiply 3 by the number of times it appears in the equation.

Lesson

• The number 3 appears 6 times in the equation. Since 3 appears 6 times in the equation, we will multiply 3 by itself 6 times.

• 3*6=18

• 18 is the answer we received when we performed addition with the first equation

Steps to solving an equation: PEMDAS

• Step 1: Solve the numbers inside the Parenthesis: (8-5)

• Step 2: Solve the numbers with Exponents: 3^4

• Step 3: Perform Multiplication: 2*5

• Step 4: Perform Division: 10/5

• Step 5: Perform Addition: 3+6

• Step 6 Perform Subtraction: 9-2

Multiple Choice

What is 30*20

• 100

• 8000

• 600

• 400,000

Multiple Choice

What is the definition of Associative Property of Multiplication?

• Changing the order of the factors does not change the product.

• The product of any number and one number is the number.

• The product of a number and zero is zero: a*0=0=0*a.

• Changing the grouping of three or more factors does not change the product.

Multiple Choice

What do you solve first when working on an equation? 3+9-2^3*(9-5)/4

• Exponents

• Addition

• Parenthesis

• Multiplication

• Division