Round Tens, Hundreds, Thousdands Boom Cards: Go around the USA with these Number and Operations in Base 10 task cards that have students rounding the highest mountain peaks in each state. Students round to the nearest 10, round to the nearest 100, or round to the nearest 1,000 to practice 3.NBT.1 using word problems and engaging real-world math connections.My themed sets of word problems use real world themes that you can use year-round, no matter the season or holiday around the corner! (These