Multiply three or more numbers: word problems

Learning Objectives By the end of of this lesson, students will be able to identify the three or more numbers (factors) that need to be multiplied in a word problem. By the end of of this lesson, students will be able to write a multiplication equation with three or more factors based on a word problem. By the end of of this lesson, students will be able to apply the associative property to group numbers in a way that makes multiplication easier. By the end of of this lesson, students will be able to solve multiplication word problems involving three factors. By the end of of this lesson, students will be able to write a final answer that includes the correct number and unit (e.g., '24 apples'). By the end of of this lesson, students will be able to explain the steps...

TermDefinitionExample FactorA number that is multiplied by another number to get a product.In the equation 2 x 3 x 4 = 24, the numbers 2, 3, and 4 are all factors. ProductThe answer you get when you multiply numbers together.In the equation 2 x 3 x 4 = 24, the number 24 is the product. Multiplication EquationA math sentence that uses the multiplication sign (x) to show that you are combining equal groups.3 x 4 x 5 = 60 is a multiplication equation. Word ProblemA math question that is written as a short story or real-life situation.'A farmer has 2 fields. In each field, there are 5 rows of corn plants. Each row has 10 corn plants. How many corn plants are there in total?' Associative Property of MultiplicationA rule that says you can change how you group factors when you multiply...

Multiplication Equation for Word Problems (Group 1) \times (Group 2) \times (Group 3) = Total To solve these word problems, you must find all the numbers that represent the different groups. Then, you multiply them all together to find the total amount. The Associative Property (The Grouping Rule) (a \times b) \times c = a \times (b \times c) This rule is your secret weapon! You can group the numbers in any order to make the multiplication easier. Always solve the part in the parentheses first. For example, in 2 x 5 x 6, it's easier to multiply (2 x 5) first to get 10, and then multiply 10 x 6.