Know Your Double-Digits Addition and Subtraction Bundle are questions designed to provide students with opportunities to improve their conceptual understanding of regrouping using pictorial representations of base ten blocks.

Working through the questions, students will begin to strengthen their faculty for mental computation which is the perfect training ground for the time when larger number and more complex sets of problems are introduced.

This bundle contains:

• 48 questions to be solved (24 per set)
• Answer Keys. Teachers may wish to remove this slide before assigning (Slide 26 in each set)
• A text box is provided for students to type their answers.

Best Wishes!