Unit 6

2.NBT.6 - Add up to four two-digit numbers using strategies based on place value and properties of operations.

STRATEGIES TO USE AT HOME

Math War

If you dont have any numbered cards - Step 1: Use a marker to print numbers from 1 to 12 (one on each card -- and write BIG). You can use the same number more than once. This will make things more fun as you play the game. Decorate the backs of the cards, if you'd like.

Step 2: Deal out all the cards to the players until all the cards have been distributed evenly. Each person makes a pile of his or her cards.

Step 3: Each person holds the pile in their hand face down. Each player draws from the top of his pile and lays a card out, face up, on the table.

Step 4: The first person to yell out the correct sum or difference of the numbers on the cards wins­ that round of play and takes the cards.

Step 5: The game continues until there are no more cards to flip. The person with the most cards at the end, wins the game.