Adding big numbers can be tricky, but this lesson introduces your students to a strategy that makes it less intimidating! Using the place value strategy will make the task less daunting.

Help students gain a better understanding of three-digit numbers by providing students with opportunities to compare sets of three-digit numbers. Use as a stand-alone activity or alongside the lesson Building My Math Fluency.

Pop into place! This lessons builds your students' knowledge of numbers, their place value, and how to write them correctly.

Use this lesson to support students in learning how to write three-digit numbers as number names. This scaffolded EL lesson can be used alone or as a pre-lesson for All About Three-Digit Numbers.

Use this lesson to review three-digit addition strategies including base-ten drawings, number lines, and the standard algorithm.

Give your students a conceptual understanding of three-digit addition with this lesson focused on base-ten blocks and drawings.

Dive deep into using base-ten blocks to solve two-digit subtraction problems with regrouping. This lesson can be used independently or in conjuction with the lesson Double Trouble: Subtraction Practice.

In this lesson, students will learn how to add a one-digit number to a two-digit number. This will help students build upon the skills needed for regrouping larger numbers.

Teach your students to use an area model to solve multiplication problems with a two-digit factor.

Help your students practice place value with this fun, hands-on base-ten block game. Neighborhood block teams compete to win points as they work together to show expanded numbers.

Help students learn the academic vocabulary and symbols used to record the results of comparing two three-digit numbers. This lesson can be used as a stand-alone activity or prior to Greater Than, Less Than: Comparing Three-Digit Numbers.

Let students stretch their problem solving skills in this lesson that teaches them how to solve problems where one-digit numbers are multiplied by multiples of 10.

Practicing subtraction using a thermometer for a number line makes math fun! In this lesson, your students will get more comfortable with subtracting two digit numbers.

Dive deep into word problems with this lesson that teaches students to sketch base-ten blocks to add multiples of 10 and two-digit numbers. Use alone or with the lesson plan Let's Build It! Two-Digit Addition.

This lesson provides students with practice as they find the missing parts of a whole and justify their reasoning. Use alongside the What's That Number lesson or alone as a support lesson for students.

Teach your students to use number lines as a strategy to multiply two single-digit factors.

Teach your students to use skip counting as a strategy to multiply two single-digit factors.

Help your students make sense of the greater than, less than and equal to in this interactive lesson! Your students will have opportunities to compare either two-digit or three-digit numbers.

Name that hero! In this lesson, your students will practice adding two digit numbers together. They will get more comfortable adding bigger numbers together, making it easier to add three digit numbers later on.

Build a solid foundation in number sense with this lesson all about the friendly number 10! Students will count with both fingers and base-ten blocks. This lesson can be used alone or with the lesson plan Place Value Concentration.

What first grader wouldn't want ten dollars? This lesson uses one and ten dollar bills to teach students place value concepts as they develop fluency adding multiples of 10. Use alone or with the lesson plan Ten Time.

Master rounding and estimating skills by having students challenge their classmates in the Make a Big Difference game. Roll three dice two times to arrive at two three-digit numbers. The largest difference wins!

What exactly does the number 97 mean? How about 454? In this lesson, students explore how two-digit numbers are made up of tens and ones. Then they use this understanding to subtract numbers within 1000.

In this lesson, students will add three-digit numbers using expanded form addition and standard algorithm addition. They'll explain their answers and highlight the steps for each of the strategies.

Get the dice out and help students get targeted practice in adding 1 and 10! In this fun place value game, students keep adding to try to get to a maximum score of 100. But be careful. If you go over 100 you’re out!

With this pastry themed lesson, your students will apply addition strategies to solve two-step, three-digit addition word problems. Finding the solutions will be sweet!

Can you break a ten? An everyday exchange of money can help students think about regrouping to subtract. Students will use bundled popsicle sticks to see how values grouped into tens can be regrouped into ones to allow us to subtract.

Help students discover how to show numbers in different ways while providing ample opportunities for students to contribute to conversations. Use as a pre-lesson to Let's Jump to Add Two-Digit Numbers or as a stand-alone lesson.

Students get practice composing and comparing two-digit numbers as they compete to collect the most cards while playing the Hungry Alligator game. This lesson can be used alone or with the lesson plan Greater than Less Than Equal to Game.

Students will have fun learning the Read, Draw, Write (RDW) strategy on two-step, mixed operation problems. First they will learn RDW, and then they will practice it in a game called Four in a Row.