A set of 10 worksheet on decimals aligned to the 5th grade common core standards. Five worksheets on adding and subtracting decimals, and five worksheets on multiplying and dividing decimals. Students will solve problems and use the answers to solve riddles. These are great to use as extra practice for your whole class, for early finishers, as homework, as a formative assessment, or as a math center activity. Answer key included. Please leave feedback on this product and earn TpT points for more great products.