1、200 + 800 =800 + 100 =100 + 400 =200 - 100 =300 + 300 =300 - 200 =400 + 200 =500 - 300 =900 + 100 =700 - 300 =700 - 400 =400 - 100 =700 + 100 =600 + 200 =500 + 200 =400 + 300 =600 + 400 =800 - 400 =900 - 800 =100 + 800 =200 - 200 =100 + 700 =300 + 400 =800 - 100 =600 + 300 =900 - 900 =900 - 200 =400
2、 + 100 =300 + 100 =100 + 300 =500 - 100 =200 + 600 =600 - 400 =800 + 200 =300 + 700 =200 + 400 =200 + 700 =100 + 600 =400 + 400 =200 + 200 =400 + 600 =900 - 500 =800 - 300 =800 - 200 =700 + 200 =500 - 400 =100 + 900 =400 + 500 =200 + 500 =300 - 100 =700 - 100 =900 - 600 =700 - 200 =900 - 700 =200 +
3、300 =600 + 100 =300 + 200 =900 - 300 =300 + 500 =500 + 300 =300 - 300 =400 - 200 =900 - 400 =600 - 300 =900 - 100 =600 - 200 =800 - 500 =100 - 100 =700 - 600 =700 - 500 =700 - 700 =100 + 500 =800 - 800 =400 - 400 =400 - 300 =200 + 100 =500 - 500 =500 - 200 =300 + 600 =800 - 600 =700 + 300 =500 + 100 =100 + 100 =600 - 100 =800 - 700 =4