### 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*

An addicting puzzle game that practices your addition skills. Make a connection that totals the target number. The longer connection string the higher the score. Two modes of play: Classic and Limited.

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

Drag and drop the number that will complete the number sentence correctly Play using addition, subtraction, multiplication or division.

*CCSS: 2.NBT.B.5*

Build addition and subtraction problems to get the right target number on each level to open the exit portal Try to get 3 stars on each of the 20 levels. The levels get trickier as you go along.

*CCSS: 2.NBT.B.5, 3.OA.C.7, 4.OA.C.5*

Answer the various math problems in this timed game. Note: the bonus questions are sequence problems even though the numbers have plus signs between them.

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

Track a course to pick up the right parts and get your ship to the base safely. The math problems contain the answer to which part to get. To get 3 stars, keep in mind that without waypoints the ship will always head to the base. Overview / Tips

*CCSS: 2.NBT.B.5*

Select how many candies you want and then grab that many from the monsters. More of a game for halloween, but the math is always in season!

*CCSS: 2.NBT.B.5*

Setup reflectors to bounce the laser beam around to build valid addition or subtraction problems with answers. Decide on your strategy, drop the reflectors on the board, set their angle, then fire the laser!