513+128=
1.5﹣0.7=
0.18÷0.3=
=
2.4÷24%=
2.5+6=
0.12=
1-=
+=
1.5×20%=
24÷3%=
2400÷150÷2=
0.2×54=
0.052=
70×5=
0.6÷0.1=
23.2+6=
32+22=
30×20%=
1÷3=
11×40=
810÷30=
÷ =
20×498≈
9.8÷0.01=
2.05﹣0.5=
8×25%=
2﹣ =
÷5=
4.58+5.42=
×4=
3÷40%=
÷=
÷×0=
∶=
-0.25=
0.78×=
24.8-4.8÷=
①6.4×2.5×1.25
②8.5×98%
③÷4+×
④×
2﹣30%= +25%= 4.23﹣23%= ×=
3+= 4×15%= = +50%=