12×=
×=
27÷=
×4.5=
÷=
3.5:1.4=
1÷-=
〇 〇 〇
〇5 〇 〇
×8=
×
×1.8=
42× ×
12×=
×=
0.36×=
7.8×=
4.9×=
×3=
×3=
=
×44= 5-= ×= ×12=
-= ×= ×0.36= ×=
1