This unit is focused on using place value concepts to add, subtract, divide, and multiply. There are 36 activities for instruction and practice. Unit Goalsuse place value concepts to mentally add, subtract, divide, and multiply with multiplies of 10, 100, etc. (ex. 40,000 x 5 = 200,000)Unit Goals (Advanced)apply skills to problem solvingAnswer keys are included.Proficiency scale is included.More InfoIncluded are 9 different exercises, each with 4 versions. That’s 36 activities in all. This allow