Arithmetic: Adding Whole Numbers

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To Browse Problems:
Select the desired Subject → Chapter → Section → Group

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Watch the introductory video for the sample problem of this lesson.

Watch Classroom Lecture

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Practice Solving the problems.
Print the worksheet and work through each problem.
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Play VideoSee Video Solution (1:22)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (0:57)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (1:30)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (2:15)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (1:35)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (1:03)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (1:44)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (2:15)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (2:13)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (1:57)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (2:06)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (1:22)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (2:01)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (1:47)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (2:50)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (2:04)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (3:11)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (2:10)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (2:48)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (1:51)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (1:32)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (3:15)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (5:02)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (3:33)Difficulty: 2Type: Problem
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Play VideoSee Video Solution (3:44)Difficulty: 2Type: Problem
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Watch the solution videos to see which problems you go right on the worksheet. Watch and understand the step-by-step solution videos to the problems you did not answer correctly and see if you can understand where you made mistakes.