This One-Sheet-A-Day math drill workbook is for 1st grade students who want extra practice with two numbers, single digit subtraction. It contains 200 math practice sheets, one for each school day of the year. Upon completion, the student will be more competent in 1st grade mathematics and ready to proceed with more difficult exercises. Unlike other math drill books, this is one of 24 workbooks created to establish a daily routine for each student to practice on their own from grades 1 through 7. It is specifically designed to gradually increase mathematic ability with the least amount of stress for both parent and student. Kids need to practice at home to support what they are learning in school, but finding resources to help with that goal can be daunting. It takes a lot of time searching online for free resources to print or for books with enough exercises. Beyond that, the options include going to libraries, enrolling them in an afterschool class or hiring a personal tutor. Who has the time and money for all of that? The answer is, not many parents. Each and every parent wants to provide enough practice work to their kids, but on top of the challenges in finding resources, questions remain about how much practice a child needs to boost educational success: twenty sheets of practice work a day? One sheet a week? What's the optimum practice work during a whole academic year? Confused? The authors have a decade of classroom expertise and have spent a large amount of time researching and wasting resources trying all the options for their own kids. Now you can benefit from what they have learnt. The result is finding out that ONE-SHEET-A-DAY is the optimum way to support classroom learning, and it is amazingly simple. This book eliminates the need to take home prints or run around franchises, bookstores and libraries trying to find enough material. It also prevents you from overwhelming your kids with too many math drill worksheets. There are approximately 200 school days a year. Simply have your child complete ONE per day.