Addition and Subtraction Strip Diagrams Word Problems

What are the key steps to using strip diagrams to solve word problems?

• Solving the problem in your head

• Using a calculator for all calculations

• Ignoring the relationship between the quantities

• Identifying known and unknown quantities, representing known quantities with strips or bars, and visualizing the relationship between the quantities

• F

• G

• H

• J

• A

• B

• C

• D

• A

• B

• C

• D

• F

• G

• H

• J

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

What equation matches the strip diagram?

• 983 - 734 = 240

• 983 x 734 = S

• 983 + 734 + 240 = S

• 734 + 240 + S = 983

What equation matches the strip diagram?

• 874 - (301 + 521) = W

• (874 - 301) + 521 = W 

• 874 ÷ 3 = W

• 310 x 3 = W