Rounding Decimals Puzzles CCSS 5.NBT.4, serve as a valuable asset to any 5th grade classroom. This is a great resource for review, math centers, group work and for interventions. This racing themed rounding decimals puzzle set includes 32 puzzles, answer key, and an optional center instruction page. It covers rounding decimals to the nearest whole number, tenth, hundredth, and thousandth. Your students will love learning about rounding decimals with this product!