2.5+6=
0.12=
1-=
+=
1.5×20%=
24÷3%=
2400÷150÷2=
0.2×54=
0.052=
①6.4×2.5×1.25
②8.5×98%
③÷4+×
④×
2﹣30%= +25%= 4.23﹣23%= ×=
3+= 4×15%= = +50%=
6.5+2.5= 1.23÷3= 5.2×5= 7÷14%=
= ﹣= ×= 0÷2022=
13.4﹣7.7= = = 299×5≈