This is a 22 page file that contains four ten card sets of flash cards to cover place value up to 1,000,000. The first set deals with standard and written notation. The second set deals with greater than and less than. The third set deals with base ten blocks and using them to model numbers (including decimals). The last set deals with changing standard notation into expanded notation. I use these during guided math. My students partner up and flash each other the cards. This way the students can automatically check their answers.