= = = =
210500≈万 78987≈万 93564≈万
199﹣197+195﹣193+191﹣189+……+7﹣5+3﹣1
1.9÷1000= 5.1÷10= 3.7×1000= 5.6-0.8=
1.25×100= 30÷100= 0.005×100= 4.9+2.1=
最少:
最多:
①367+33=
②9﹣5.2=
③0.6×0.2=
④﹣=
⑤÷=