Workshop: Addition and Subtraction Strategies

This Workshop provides opportunities to review and practice efficient computation and estimation strategies for solving addition and subtraction problems. Prepare to observe and assess students' use of these strategies using the addition and subtraction portions of the following expectations:

E1.

Demonstrate understanding of the place value concepts and mathematical properties involved in operations with multidigit numbers (e.g., making trades in addition and subtraction, using the distributive property to multiply).

E3.

Add and subtract multidigit numbers using more than one strategy.

E5.

Estimate sums, differences, and products.

E6.

Choose appropriately from among mental math, estimation, and paper-and-pencil methods to find sums, differences, and products.

E7.

Solve multistep problems using addition, subtraction, multiplication, and division.

Students will identify their level of confidence with a particular concept and choose problems from Workshop Menus. See the TIMS Tip for more about Workshop Menus.

Use your own evaluation of students' progress to help guide their choices.

Plan to organize the class into partners, small groups, or stations based on the problems chosen from the menus. Students may work with different groups or partners as the Workshop progresses.