=
=1
0.18÷0.6=
2.8+1.9=
0.18×1000=
①÷15= ②1÷ = ③39×= ④3.14×0.12 =
⑤-= ⑥×= ⑦÷= ⑧×-×=
×= -×0= ×3.6= ÷=
30×= := 0.35:0.5= ÷=
写作:
读作:
个十和个一是