Section 1
Adding Partial Products
Property
The final product of a multiplication problem is the sum of all its partial products.
In this Grade 5 lesson from enVision Mathematics, Chapter 3, students learn to multiply 3-digit by 2-digit numbers using both the standard algorithm and partial products method, including regrouping ones, tens, and hundreds. The lesson walks through each step of the multiplication process and connects estimation to checking the reasonableness of products.
Section 1
Adding Partial Products
The final product of a multiplication problem is the sum of all its partial products.
Section 2
The Standard Algorithm for Multiplication
The standard algorithm for multiplication is a procedure for multiplying numbers by breaking the problem into partial products.
You multiply the top factor by each digit of the bottom factor, one at a time from right to left, and then add the resulting partial products together.
Expand to review the lesson summary and core properties.
Section 1
Adding Partial Products
The final product of a multiplication problem is the sum of all its partial products.
Section 2
The Standard Algorithm for Multiplication
The standard algorithm for multiplication is a procedure for multiplying numbers by breaking the problem into partial products.
You multiply the top factor by each digit of the bottom factor, one at a time from right to left, and then add the resulting partial products together.