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3,739 reviewed resources for Numbers and Operations

9 Items in Collection
Lesson Planet

Perform Arithmetic Operations with Complex Numbers: High School Math Common Core

For Teachers 9th - 12th Standards
Imagine a world where all the numbers live together harmoniously. Here you have it! Check out these resources that introduce the concept of an imaginary number, go through the operations, and model how to utilize the conjugate. 
EngageNY

EngageNY Grade 7 Math Module 2: Rational Numbers

For Teachers 7th Standards
Middle schoolers play the Integer Game to build a mental picture and conceptual understanding of integer operations. Tweens add, subtract, multiply, and divide signed numbers—a practice beneficial in developing their competency of...
21 Items in Collection
Lesson Planet

EngageNY Grade 6 Math Module 2: Arithmetic Operations Including Division of Fractions

For Teachers 6th Standards
Twenty-one lessons and two exams make up a math unit all about decimal operations and division of fractions. By way of direct instruction, discussion, guided practice, collaborative learning, and independent practice scholars solve...
8 Items in Collection
Lesson Planet

Mental Math and Compatible Numbers

For Teachers 4th - 7th
Strengthen the skills of mental math when using compatible numbers. Find numbers that benefit one another when doing the four operations. Practice correct estimating to make those operations go quicker and better understand if the...
7 Items in Collection
Lesson Planet

Grade 2 Supplement Set: Math

For Teachers 2nd Standards
What would be better for your second grade mathematicians? Grab this set of engaging lesson plans that will be the highlight of your students' day as they learn how to tell time, solve equations, add and subtract multi-digit numbers, and...
35 Items in Collection
Lesson Planet

Common Core Math: 8th Grade

For Teachers 8th Standards
Check out the Common Core with a collection that represents all the 8th grade math standards. Most resources engage multiple standards but the main one is listed on the notes section of each tab. 
35 Items in Collection
Lesson Planet

Algebra: High School Common Core Math

For Teachers 9th - 12th Standards
All Algebra, all the time! Here is a compiled list of resources that address all of the standards regarding Algebra Common Core for high school. Each resource has the main standard it addresses under the notes section of the item. 
31 Items in Collection
Lesson Planet

Number and Quantity: High School Common Core Math

For Teachers 9th - 12th Standards
This collection has a resource for each standard in the Number and Quantity selection of the CCSS. While several of the resources cover multiple standards, the focus standard is listed in the notes section of each resource for easy viewing.
40 Items in Collection
Lesson Planet

Common Core Math: 6th Grade

For Teachers 6th Standards
Need some help aligning your 6th grade math curriculum to Common Core? Here is a collection complete with a resource for every standard in the curriculum. While many of these resources cover multiple math standards, the main one...
1 In 1 Collection
Lesson Planet

Grade 2 Supplement Set A1 – Numbers and Operations: Addition and Subtraction

For Teachers 2nd Standards
Using unifix cubes, a spinner, a number line, and fact family triangles second graders will play their way to subtraction competency. They engage in a series of activities that has them playing game that require them to add and subtract...
Lesson Planet

Grade 1 Math: Partner Work, Numbers and Operations, Pattern Recognition

For Teachers 1st
Looking for patterns is a key skill young learners need to know. They build number sense by first looking for number patterns in a series of simple addition and subtraction problems that all involve the number zero. They work with a...
Lesson Planet

Numbers and Operations as Words

For Students 4th - 5th
Teach numbers in word form with this activity. In this numbers and operations worksheet, learners solve 22 problems in which numbers are written in word form. Students solve the problems and write their responses in word form. Example:...
Lesson Planet

Numbers and Operations in Base Ten

For Teachers 1st
First graders use a ten frame and counters to demonstrate their understanding of two-digit numbers. Use the included suggested questions to check for understanding and encourage abstract reasoning.
Lesson Planet

Grade 1 Supplement A2 – Number and Operations: Numerals to 1,000

For Teachers 1st Standards
What a fun set of math operations activities! First, the mysterious Digit Switcher writes letters to your first-graders, challenging them to recognize patterns in three-digit numbers. Then, the class works together analyzing three-digit...
Lesson Planet

Introducing Integers and Their Operations

For Teachers 6th - 8th Standards
There's nothing negative about this mini-unit on integers! Engaging young mathematicians in a series of hands-on activities and collaborative learning opportunities, this resource offers an excellent way to introduce your class to...
9:40
Lesson Planet

Introduction to Order of Operations

For Students 7th - 9th
First demonstrating the improper ways of solving an equation (left-to-right, multiplication first), Sal shows viewers how the answer of an equation can be drastically incorrect by neglecting to use the order of operations. He uses...
5:20
Lesson Planet

More Complicated Order of Operations Example

For Students 7th - 9th
Demonstrating a "really hairy and beastly problem," Sal again shows the power and importance of solving an equation according the order of operations. Additionally, he guides viewers through a step in the equation when there are multiple...
2:41
Lesson Planet

Dividing Mixed Numbers

For Students 5th - 7th
Before Sal can divide a mixed number, he has to rewrite it as an improper fraction. He explains that dividing a fraction is the same as multiplying it by its reciprocal and that you can "cancel out" numbers to make multiplying easier.
1:32
Lesson Planet

Adding Whole Numbers and Applications 1

For Students 3rd - 5th
Adding double-digit numbers can seem difficult for some students. But, this Khan Academy video makes this process clear in a developmentally sound way. Students watch as 'Sal' adds the number 46 to 43. He references each number by its...
Lesson Planet

Formative Assessment Task: Number and Operations in Base Ten

For Teachers 3rd - 5th Standards
Engage your class in developing their understanding of place value with this simple hands-on activity. Presented with a multi-digit number, young mathematicians use the provided digit cards to create numbers in response to a series of...
1 In 1 Collection
Lesson Planet

Imaginary Numbers? What Do You Mean Imaginary?

For Teachers 9th - 12th Standards
Don't worry, this resource actually exists. Scholars learn about imaginary numbers and work on problems simplifying square roots of negative numbers. As an extension, they research the history of imaginary numbers.
Lesson Planet

Rewriting Numbers as Tens and Ones

For Students 1st - 4th
 Unpack double-digit numbers using this fantastic graphic organizer featuring eight place value problems. Learners separate each number into tens and ones, then write it out by completing a sentence frame. As they work through the...
Lesson Planet

Pathways to Double-Digit Addition

For Students 1st - 4th
By adding the tens and ones place separately, beginners to addition can easily complete 10 double-digit addition problems. This is an excellent worksheet, as it visually sets learners up on the pathway to this strategy. They simply...
Lesson Planet

Module 3: Numbers and Operations

For Students 10th - 12th Standards
Bring some concrete reasoning to the skills of multiplying and combining terms. Using various strategies, the six activities in the module provide practice for the skills of adding, subtracting, multiplying, and diving polynomials. The...

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