## 4.OA.B.4

## Find all factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1-100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1-100 is prime or composite.

56 Lesson(s)

### Prime and Composite Numbers

4th Grade Math »
Unit: Multiplying and Dividing

4th Grade Math »
Unit: Multiplying and Dividing

### Factor Pairs, Arrays, Patterns and Fun! Building factor pairs to 50

4th Grade Math »
Unit: Concepts of Multiplication

4th Grade Math »
Unit: Concepts of Multiplication

### Subtracting Large Numbers within a Context

4th Grade Math »
Unit: Place Value

4th Grade Math »
Unit: Place Value

### Finding Factors and Prime Numbers

4th Grade Math »
Unit: Multiplication with Whole Numbers

4th Grade Math »
Unit: Multiplication with Whole Numbers

### How To Easily Find All Those Factor Pairs

4th Grade Math »
Unit: Concepts of Multiplication

4th Grade Math »
Unit: Concepts of Multiplication

Big Idea:

#### Students learn to list factor pairs through the use of a dynamic website that uses grid lines and a listing strategy. They will discover how to find the missing factor of those factor pairs ( basic facts) that they don't know through using arrays.

Favorites
(14)

Resources
(12)

Reflections
(1)

### Multiplication arrays

4th Grade Math »
Unit: Multiplication with Whole Numbers

4th Grade Math »
Unit: Multiplication with Whole Numbers

### Multiplication and First Quarter Assessment

4th Grade Math »
Unit: Multiplication with Whole Numbers

4th Grade Math »
Unit: Multiplication with Whole Numbers

### Multiplication and Problem Solving to Make Bracelets Day 2

4th Grade Math »
Unit: Multiplication with Whole Numbers

4th Grade Math »
Unit: Multiplication with Whole Numbers

### Try, Check, Revise

4th Grade Math »
Unit: Problem-Solving Strategies

4th Grade Math »
Unit: Problem-Solving Strategies

### Multiples in a Minute

5th Grade Math »
Unit: Multiplication Madness

5th Grade Math »
Unit: Multiplication Madness

### The Sieve of Eratosthenes: Prime Numbers, Multiples & Inverse

4th Grade Math »
Unit: Division Unit

4th Grade Math »
Unit: Division Unit

Big Idea:

#### Using an interactive website, students use the Sieve of Eratosthenes to help them discover prime numbers, understand divisibility and inverse relationships between multiplication and division.

Favorites
(2)

Resources
(20)

Reflections
(3)

### Prime, Composite and Square Numbers

4th Grade Math »
Unit: Concepts of Multiplication

4th Grade Math »
Unit: Concepts of Multiplication

### Multiplication Array Part II Filling It In

5th Grade Math »
Unit: Multiplication Madness

5th Grade Math »
Unit: Multiplication Madness

### Quiz 2: Area & Perimeter Word Problems Using Metric Measurement

4th Grade Math »
Unit: Metric Measurement

4th Grade Math »
Unit: Metric Measurement

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