Place Value

We've been having fun with place value! When we study place value we are learning that the place a digit has in a number affects its value. For example, 7 has a different value in 27 than it does in 72. In 27 the 7 is worth 7. However, in 72, the 7 is worth 70. This is a very important concept for children to understand as we move into more sophisticated math concepts.

This morning we practiced writing numbers in expanded form. Expanded form shows the value of each digit. For example, the expanded form of 273 = 200 + 70 + 3. The expanded form of 791 = 700 + 90 + 1.

We also learned a new math challenge called Digit Deal. To play Digit Deal well, you need to understand the concept of place value. You can play Digit Deal together or independently. The players should choose 3 digits from a deck of cards. (You can make one of the face cards stand for 0.) The players should use only their 3 cards to make the:

Largest possible number, smallest possible number, the number closest to 500, the largest even number, the smallest odd number, the even number closest to 400 and the odd number closest to 300.

If your child is looking for more of a challenge, the game can be played with 4 digits or even 5. Just change some of the kinds of numbers you are looking for. Have fun! :o)