×40=
÷=
×=
×2.1=
0÷=
20×45%=
25%÷=
1÷×=
×÷×=
-= 4.65+4.4= 4190÷69≈ 0.1÷1%=
2.6×0.6= 1725﹣189= ×= ×÷=
- = × = 80÷10%= 42×3.14=
30%+0.45= 3.6÷0.18= 2- = 6- - =
27+68= 341﹣103= 270÷18= -=
2÷= 0.42×0.2= 3.5×50= ×=
+=