Second Grade: Math

2-Digit Addition and Subtraction

Play “Speed Solver”

Call out addition and/or subtraction problems and challenge your child to solve them as quickly as possible using different strategies. You can extend the activity by writing the names of the strategies, one to an index card, and then turning the card face down. Have your child pick an index card and then use the strategy written on the card to solve the next problem you call out. Use strategies such as, using a number line, decomposing the addends or subtrahend, make ten, and use doubles and almost doubles.