Teachers, save “Rounding to the Nearest 100” to assign it to your class.

You will need: a deck of cards with digits 1-9. Place the deck of cards face down (so you can’t see the numbers). Take the top 3 cards. Use them to make a 3-digit number. Use to take a close up picture of your number. Use to make a number line. Label the endpoints and halfway point. Plot the number on the number line. Round the number to the nearest 100.