This is the answer key to the matching activity which includes questions regarding place value such as identifying the value of specific digits; identifying the place of specific digits; expanded and written forms of whole numbers and decimals; comparing and ordering decimals; and rounding whole numbers and decimals to a specified place. There are many uses for this activity one of which could be a matching activity. For the matching activity, students may use a large sheet or paper or construction paper. Have the students divide the large sheet of paper into three columns. In the first column, the students can glue down all of the problems. In the second column, have the students show their work in order to solve the problem. In the third column, the students can then glue down the matching answer so that they are showing the problem, their work, and the matching answer. This product works very well for differentiation. In order to differentiate further, consider folding and gluing down the problems for students who may need more assistance. Other uses for this product include playing the game ZAP or for a classwork grade or assessment purposes.