Set consists of 30-2 page worksheets. Each worksheet features 6 sections: number sense and operations, measurement, data analysis/probability, geometry, patterns/functions/algebra, and problem solving to provide a variety of practice and review. These are great for keeping math skills sharp; intended for 2nd grade but make nice review practice for older students as well. This set is numbered 11-40 and reviews the following skills: basic addition and subtraction, multiplying by 10 and 5, number order, number combinations (when adding), even/odd numbers, basic measurement concepts, calendar concepts, , time to time to hour and half hour on analog clock, counting coins (dimes, nickels, pennies, likelihood in probability, tally tables, pictographs, open/closed figures, # of angles, 2-D shapes, symmetry, describe/extend/reproduce simple patterns, greater than/less than/equal to, missing addends, deductive reasoning, and word problems. **See also sets numbered #41-70, #71-100 and #101-130