Have you battled getting your students to learn their place values from ones - millions? Here's an easy way to practice the skill - PLACE VALUE BATTLESHIP!
I had the students write their number at the bottom of their sheet. Then they asked their opponent, "Do you have a 5 in the hundreds place value?" If the opponent did not, then they crossed it off. If the opponent did have the asked number, they circled it. My class absolutely LOVED it!
Common Core: Number & Operations in Base Ten
My students would tell you, BUY IT! PRINT IT! PLAY IT!