【實用教育app】Subtraction Action|最夯免費app-綠色工廠好玩App

Click on the squares to subtract the numbers so that they equal the value under the word "Number". If you subtract the numbers fast enough you will get bonus points. If you click on numbers that don't subtract down to the target number you will have to start over. Be careful--if you run out of numbers that you need, you'll get stuck. Have fun!