MathPup Defense Decimals

The Snow Noids are trying to take over MathPup's fort.  Help MathPup fight them off by using the snow cannons to fire a decimal such that added to their decimal totals 1.  Don't let them get past MathPup and watch out as on later levels they start bringing shields!

Click on a cannon in front of a Snow Noid to move MathPup over to it.  Then click on the decimal at the bottom of the screen to fire that decimal at the Noid.  If the fired decimal added to the Noid's decimal totals one then the Noid will be knocked off the screen.