Addition of numbers to tens of thousands math game

Might be a basic math skill. In 4th grade, addition is combined with place value and regrouping from units to tens to hundreds to thousands. Students learn a bunch of strategies when adding.

Players should have a scratchpad available so as to figure on each problem individually. There are 2 minutes on the clock for every problem and students should have quite enough time to unravel the algorithm and choose the right answer from the four provided choices. After each choice is taken the next screen will feature a colorful space dog who is trying to catch a bone. If the answers are correct, the bone is caught by the dog. But if the answers are incorrect, the bone is knocked away by a meteor or beamed aboard an alien spaceship.