10﹣=
5.7÷0.19=
1.74+2.6=
35﹣+=
3×10%=
÷=
3.14×9=
×5÷×5=
526﹣198= 0.32×2.5= n×n= kg:240g=
24×+= 2.6+1.98= -= 1.6÷25%=
÷= ×÷×0=
83﹣57=
1﹣0.74=
=
0.25×40=
2.1× =
0.15÷0.5=
①57.6﹣18.15+32.4﹣11.85
②78×25+1764÷49
③2.5×32×12.5
④3.6×[(37.5+18.5)÷2.8]
⑤÷[(﹣)×]
⑥199×99+178+21
7,14,,,。
50,45,,,。