### Common Core State Standard

### 2.NBT.B.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

*CCSS: 2.NBT.B.5, 3.OA.C.7*

Capture the Wolves before they get to the lambs! Build addition, subtraction, or multiplication problems to set traps on the board.

*CCSS: 2.NBT.B.5, 3.OA.A.4*

Fly your spaceship safely to earth. On the way you'll need to visit the stars to collect the numbers to correctly fill in the math problem. Choose to play using addition, subtraction, multiplication or division.

*CCSS: 2.NBT.B.5*

It is time for the math exam. You will have just 1 minute to answer as many questions as possible. Choose addition, subtraction, multiplication or division.

*CCSS: 2.NBT.B.5, 7.NS.A.1b*

Win gold to keep up your towers and strengthen your cannons by defeating the tower eating bugs. To do this you'll need to fire the right cannon by solving its equation.

*CCSS: 2.NBT.B.5, 3.OA.C.7*

Drive over hill and dale to deliver the goods. Use your math skills to load and unload the goods correctly. Choose to play using addition, subtraction, multiplication or division. Drive carefully so the goods don't bounce out of the trailers.

*CCSS: 2.NBT.B.5, 3.NBT.A.2*

Empty as many eggs as you can into the main nest in 40 seconds while keeping a running total of the amount of eggs in the main nest. Be sure to include the amount shown at the end.

*CCSS: 2.NBT.B.5*

The addition version of our popular MathNook boxing game. Use your adding skills to beat your opponent and go on to the next opponent who is a little tougher. Beat all opponents to become the addition boxing champ.