①1264008126万
②13900000139万
③32亿3210000000
④1209000000001208亿
⑤500005亿
⑥34万340000
0.48÷0.3= 36- = 2.5×40= ×(15+ )=
684+198= 12×1%= × = ×9÷ =
204﹣78= 120×7= 960÷6=
3.8﹣2.98= + = ÷ =