Adding within 1,000

In the 2nd-grade unit in adding within 1,ooo, students will be expected to:

• add 10 or 100 to a number mentally

• use an open number line to add 3-digit numbers

• use models to add 3-digit numbers

• add 3-digit numbers using partial sums

At-home Practice:

Supplies:

• a deck of cards (Remove face cards)

Divide the deck evenly among players. Players take turns drawing a card and naming the “place” (ones, tens, hundreds) they are putting it in. Cards cannot be moved once placed. Players repeat until they have both formed a 3-digit number. The player with the largest 3-digit number wins all cards. Play continues until all cards are used. The player with the most cards wins.