3rd grade place value game - Place value indicates the differences in the actual values of different digits in the same number. For example, 454; the value of four differs in both positions. One is 400 and the other is 4. It is for students to understand the place of numbers either as being in the units place, tens place, hundreds place or thousands place. Understanding place values also helps students to know how to read very large numbers which need to be broken down into places. The present game is a slot machine game in which students press a button on the slot machine and answer questions. In each case an underlined digit in a number will be shown and students have to determine the actual value. Sometimes they have to tell the place of the number. This online math activity is for 2nd, 3rd, 4th and 5th graders.