4.4A - Add and Subtract Whole Numbers

I Can Statements:

• I can estimate sums and differences to find reasonable answers.
• I can use the standard algorithm to solve addition and subtraction problems.

Learning Path

• Learning Path for 4.4A - Add and Subtract Whole Numbers

Practice Activities

I can estimate sums and differences to find reasonable answers.

• Video from Tales of 4th Grade
• Practice Problems - Video Explanation
• Online Game - Mental Math
• Estimate Using Compatible Numbers
• Round to the Nearest Tens to Estimate

I can use the standard algorithm to solve addition and subtraction problems.

• Video - Khan Academy - Adding 3-Digit Numbers
• Video - Khan Academy - Subtracting 3-Digit Numbers
• Video - Math Antics - Multi-Digit Addition
• Video - Math Antics - Multi-Digit Subtraction
• Stamp Collections - Answer Key
• Subtraction Story Problems - Answer Key
• Vocabulary Activity

Extension Activities

I can estimate sums and differences to find reasonable answers.

• Make your own Comic Strip
• Extend Your Thinking
• Story Book - Estimating Sums and Differences
• Rounding vs. Compatible Numbers

I can use the standard algorithm to solve addition and subtraction problems.

• Addition and Subtraction Flowchart
• Missing Numbers
• Vocabulary Rock