# Concept of multiplication and division

5 videos
6 skills
Let's introduce ourselves to two of the most fundamental ideas in all of mathematics: multiplication and division! Common Core Standards: 3.OA.A.1, 3.OA.A.2

### Intro to multiplication

VIDEO 3:33 minutes
Use arrays and repeated addition to visualize multiplication.

### Multiplication as groups of objects

VIDEO 4:19 minutes
Use arrays to show different ways to multiply and get the same solution.

### Meaning of multiplication

PRACTICE PROBLEMS
Interpret products of whole numbers, e.g., interpret 5 x 7 as the total number of objects in 5 groups of 7 objects each.

### Multiplying 1-digit numbers

PRACTICE PROBLEMS
Multiply two 1-digit numbers. Some problems include multiplying by 10.

### More on the concept of multiplication

VIDEO 5:29 minutes
Use arrays and repeated addition to multiply.

### The idea of division

VIDEO 8:01 minutes
Use an array and understanding of multiplication to divide.

### Meaning of division

PRACTICE PROBLEMS
Use visual models to understand division.

### Basic division

PRACTICE PROBLEMS
Divide two numbers.  Quotients are equal to or less than 10.

### 1-digit division

PRACTICE PROBLEMS
Find the missing number in division equations with one-digit quotients.

### Examples relating multiplication to division

VIDEO 3:27 minutes
See the relationship between multiplication and division problems.

### Relate division to multiplication

PRACTICE PROBLEMS
See the relationship between multiplication and division problems.