Add or subtract 2-digit numbers within 99. Great way to differentiate addition and subtraction with 2-digit numbers. Includes: 24 two-digit problemswith hundreds charts, base-ten, expanded form, open number lineDifferentiate with all the ways to solveGreat practice for each strategyHow to use: These can be used for a lesson in the "I do" , "we do" , "you do". They can be used as an independent work packet, homework, morning work, and much more! Please leave a REVIEW! I'm trying to grow my sm