Khan Academy: Understand Place Value When Adding Ten

Developing a strong number sense in the primary grades is essential to the success of young mathematicians. These simple worksheets present learners with a series of ten-frames, asking them to write the number shown in each model....

Support your visual learners on their journey to mathematical understanding with this collection of ten frame cards. Representing numbers from 1 to 42, these pictures can be used in any number of ways to introduce children to the concept...

Strengthen your class's understanding of place value with this series of base-ten flash cards. Including illustrations representing a variety of numbers from 13 to 94, this resource can be used in many different ways...

Work on place value and addition. Here is a resource that features different types of problems for your second graders to solve. After studying the example at the top of the page, they write the missing number in 12 addition problems....

As an overview of place value involving numbers in the hundreds, this resource would be incredibly beneficial. There are only a few examples, but the graphics make this concept come alive. In a lower grade classroom, this presentation...

Watch as Sal adds 37 + 2 by thinking about place value. [2:35]

Sal demontrates how to add 23 + 30 by thinking about place value. [3:15]

Demonstrates how to add 37 + 2 using drawings of base ten cubes to represent 1s and 10s. [2:36]

Developing fluency with basic addition and subtraction is fundamental to the success of all young mathematicians. This four-day lesson series begins with learners using ten-frames and hundreds charts to recognize patterns when adding and...

Understanding place value is the goal of this math lesson. Learners play a game which has them create a number cube, gameboard, and then play the game using the steps outlined in the lesson. The lesson also has adaptations for different...