# Numbers and Operations Teacher Resources

Find Numbers and Operations lesson plans and worksheets

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#### What is Place Value for Whole Numbers?

Whole numbers are the natural numbers including zero. The instructor illustrates and explains place value. She draws a place value chart and then defines each term and what the numbers mean. She writes a number in standard form and then...

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#### Imaginary Numbers Are Real (Part 3: Cardan's Problem)

Were complex numbers discovered or invented? A video presentation makes the case for the discovery of square roots of negative one. In order for complex numbers to be real, then they must behave like other numbers, which they do in terms...

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#### Imaginary Numbers Are Real (Part 6: The Complex Plane)

How do addition and subtraction work on the complex plane? A short video presentation provides a clue on how to add complex numbers geometrically. The video ends with four problems to determine the rules for multiplication on the complex...

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#### Complex Numbers (Part 2)

This video continues looking at dividing complex numbers by looking at the conjugate of a complex number. The instructor then uses the conjugate to rationalize the denominator of a rational expression with a complex number in the...

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#### Complex Numbers (Part 1)

In this video, a complex number is defined and graphed on the complex plane. Sal also shows how to add, subtract, and multiply two complex numbers. He starts showing how to divide two complex numbers, but runs out of time and continues...

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

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...

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#### Complex Numbers (Part 1)

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#### Divide with Two-Digit Divisors Using Base Ten Blocks

How does multiplication help when dividing a number? Prepare your number crunchers to become fluent in dividing multi-digit numbers by relating base ten blocks to the standard algorithm with this video. Reinforce students’ understanding...

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#### How Do You Write a Whole Number Given in Expanded Form in Standard Form and in Words?

You've been given a number written in expanded form. You have to write it in standard form, and in word form. The instructor does a nice job illustrating and explaining just how to do both of these operations.

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#### What is Place Value for Whole Numbers?

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#### Introducing Integers and Their Operations

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...

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#### Complex Numbers (Part 2)

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#### Math 7 Study Guide for Number Sense and Operations: Quiz 1

This number sense and operations study guide provides notes and explanations as well as practice problems. In order to practice their math skills, learners write fractions as decimals, identify which number set a number belongs to, take...

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#### Bowling Over the Order of Operations

Upper graders will solve equations using order of operations, and create equations that to play a fun math bowling game. They will bowl using dice to practice operations. Extensions are also included.

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#### Order of Operations with Rational Numbers - Problem Solving 22.4

Middle schoolers examine three equations with missing numbers or symbols then solve five word problems where they must use rational numbers and the correct order of operations.

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#### Order of Operations with Rational Numbers - Reteach 22.4

Middle schoolers solve eight fill-in-the-blank problems where they use correct order of operations to evaluate each mathematical expression. An explanation of order of operations and two clear examples are provided.

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#### 5 Dice: Order of Operations Game

Sometimes the simplest ideas can be the most challenging to solve! In this app, you are given five numbers and a set of operators, and you need to create an expression that when evaluated using the order of operations simplifies as the...

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#### Ordering Large Numbers: Numbers up to 9,200,000

Once learners understand place value, they can put all kinds of numbers in order - even eight-digit numbers! Fourth graders put groups of five numbers in order from smallest to largest. After they finish, they decipher a word problem and...

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#### Place Value for Whole Numbers

Work with small and large numbers alike with a place-value activity. After writing the value of selected numbers, fourth graders write what happens to each number if they change certain parts of it.

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#### Putting Numbers in Order, Numbers Up to 9,900

Put these big numbers in order! Fourth graders review the example at the top of the page before putting 16 sets of 4-digit numbers in order from smallest to largest. You can cut the three sections of problems into strips of paper for...

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#### Addition and Subtraction Numbers Trail Worksheet

The number four is going on an adventure! This is a fun take on addition and subtraction problems; learners begin this math maze with the number four, and take it through various operations at each box. As it travels, scholars write down...

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#### Adding Bigger Numbers: 2 and 3 Digit Numbers

Challenge your young learners with an addition worksheet, which provides different opportunities to practice adding two and three-digit numbers. The first two sections provide twelve problems for pupils to solve, while the last two...

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#### Multiplying Larger Numbers by 1-Digit Numbers

Introduce multiplication with large numbers to your fourth grade class. A straightforward worksheet provides three and four-digit numbers, multiplied by one-digit numbers, to help transition your learners into more difficult...

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#### Putting Numbers in Order, Numbers up to 100

Party with number balloons! Young learners study four groups of illustrated balloons with numbers on them, and write the numbers in sequence from smallest to greatest, or greatest to smallest. For extra fun, have them color the balloons...