Students in grades 3 through 5 as well as some savvy 2nd graders need practice solving equations with unknowns in all positions as well as 'backward' equations that start with the result. Be sure you have taught solving equations with unknowns in all positions (start unknown, change unknown, result unknown from the Common Core) thoroughly or students will not be successful on these fast and furious practice pages- 15 problems per page. Also included in the practice are vertically aligned problems with unknowns in all positions. Cute kid graphics have been kept to a minimum for older students and teachers who do not prefer cutsie! There are 20 practice pages for addition (10 for sums to 10 and 10 for sums to 20), and 20 practice pages for subtraction (10 subtracting within 10 and 10 subtracting within 20) to use throughout the year. Keep your students thinking as these are not hum-drum pages!