÷10= ÷= += ÷=
×2.4= ÷= ×= -=
×÷×= 24×(++)=
①
②
③
×=
× =
3÷=
÷ 3=
=
0.48×=
×÷×=
1÷10%= 52=
6.4-3.32=
×=
+=
2.5×0.9×0.4=
9.6÷0.6=
0.3×0.4=
48×12.5%=
×5.6=
2÷2%=
-=