Strategies for Three-Digit Addition

Mrs. Walker introduces a lesson on using various strategies to solve three-digit addition and subtraction problems. The lesson covers strategies like math drawings, arrow way, number bonds, and vertical form. Students are encouraged to choose the most efficient strategy for them. The video includes examples of solving 180 + 440, 400 - 236, and 389 + 411 using different methods. The lesson concludes with instructions for independent practice and an invitation for students to ask questions if needed.

What is the main goal of today's lesson?

• To learn multiplication strategies

• To understand division techniques

• To use and explain different strategies for three-digit addition and subtraction

• To memorize addition and subtraction tables

Which material is essential for today's lesson?

• A dry erase board

• A textbook

• A calculator

• A ruler

Which strategy involves using place value discs?

• Mental math

• Arrow way

• Compensation

• Math drawings

What is the result of 180 + 440 using the vertical form?

• 620

• 640

• 580

• 600

Which strategy involves breaking numbers into friendlier parts?

• Mental math

• Vertical form

• Number bond

• Math drawings

What is the result of 400 - 236 using compensation?

• 154

• 184

• 174

• 164

Which strategy starts with addition to solve a subtraction problem?

• Vertical form

• Arrow way

• Math drawings

• Compensation

What is the result of 389 + 411 using math drawings?

• 700

• 750

• 800

• 850

Which strategy is considered most efficient for 389 + 411?

• Math drawings

• Arrow way

• Vertical form

• Number bond

What should you do if you have questions during independent practice?

• Search online

• Let the teacher know

• Ignore them

• Ask a friend