Included in this download are two sets of task cards (52 cards in total) to practice place value relationships, computation with missing numerals, problem solving, addition and subtraction within 1000, higher-order thinking skills, and explaining one’s mathematical reasoning. I have used problems such as these with 2nd through 4th grade, though I could certainly see certain 5th graders benefitting from them, as well. These task cards will help support CCSS Standards 2.NBT.7, 2.NBT.9, 3.NBT.2, an