= (下)
= (下)
37-8= 53+16= 81-6= 48+12=
4+36= 70-31= 3×5= 4×3=
①黑板长约4 ②小明高134
③一场电影大约2 ④一张课桌高60
<<<<
50+25+17=
43+26+14=
27+18+32=