60 Valentine Themed Addition and Subtraction Word Problems for within 20! Use these fun word problems to practice addition and subtraction with sums and differences under twenty. You may project on a white board or use these as task cards or in math centers. For example, each page can be projected on your white board, and you can do them together as a class. They could be used as a word problem of the day for the month of February. You can also use them with small groups for intervention.