The purpose of this lesson is to use personal strategies to subtract 3-digit numbers.

Included is a YouTube video to support Grade 3 Blended Learning Math - Unit 3.11: Addition and Subtraction - Subtracting 3-Digit Numbers

The purpose of this lesson is to use strategies to add 3-digit numbers.
Included is a YouTube video to support Grade 3 Blended Learning Math - Unit 3.7: Addition and Subtraction - Adding 3-Digit Numbers

The purpose of this lesson is to use personal strategies to subtract from a 4-digit number.

Included is a YouTube video to support Grade 4 Blended Learning Math - Unit 2.11: Whole Numbers - Subtracting 4-digit Numbers.

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This blog post talks about Models and Strategies we use for two-digit addition and subtraction. I go into detail about the differences between models and strategies and which ones worked well for us.

The main areas of focus in the second grade math curriculum are: understanding the base-ten system within 1,000, including place value and skip-counting in fives, tens, and hundreds; developing fluency with addition and subtraction, including solving word problems; regrouping in addition and subtraction; describing and analyzing shapes; using and understanding standard units of measure; working with money and time; and introducing multiplication.

The worksheets and printables for second grade math available on this page will enhance any classroom's math curriculum. These engaging second grade math worksheets cover the basics of counting and ordering as well as addition and subtraction, and include exciting introductions to geometry and algebra for future self-assurance in math.

Third-grade math instruction is focused on the following areas: developing an understanding of multiplication and division and strategies for multiplication and division within 100; developing an understanding of fractions, especially unit fractions (fractions with numerator 1); developing an understanding of the structure of rectangular arrays and of area; describing and analyzing two-dimensional shapes.

The best way to ensure your students fully grasp the math concepts they'll need to successfully progress in their education is to practice as much as possible. The worksheets, puzzles, games, and other resources available here are the perfect solution for parents and teachers who want to provide their third graders with the tools they need to understand and excel in third-grade math.