This activity, in the familiar bingo game format, provides practice in decomposing two-digit numbers for small groups or the whole class. Each student uses one of the 10 bingo cards (more than one student can use each master because their choices will result in different outcomes). A number card (0-9) and place value card (1's, 10's) is selected. All players look on their bingo card for a number fitting the criteria, then record the number and the tens/ones breakdown on the bottom of their paper. Play standard five-in-a-row bingo, or one of the five longer variations.