Adding Whole Numbers and Applications 1

Curated and Reviewed by Lesson Planet

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 place value; so 6 +3 is 6 ones + 3 ones, and 4+4 is 4 tens + 4 tens or 40+40. The concept of place value is key in understanding re-grouping and double-digit multiplication. Seeing place value in a math application really reinforces the concept.

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Concepts

addition whole numbers, addition, expanded notation, math applications, real-world applications

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Additional Tags

adding whole numbers, developmental math, expanded form, math applications, math

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Resource Details

Grade

3rd - 5th

Subjects

Math