Activity
NumberNut

Number Nut: Addition: 2 Digit Numbers

For Students 3rd - 8th Standards
Learn how to add double-digit numbers in this lesson complete with examples, rules, and vocabulary.
Unit Plan
Khan Academy

Khan Academy: Add Within 100

For Students 1st - 3rd Standards
Practice adding two-digit numbers. All numbers in these problems are 100 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

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