0.3× = 2÷( - )= 35× =
9- = 0.375÷ = ÷2.1=
=
⑴12×=
×7.2=
12÷=
×=
⑵0÷=
0.42÷=
÷=
+=
⑶÷2=
1.8×=
÷0.5=
-=
⑷÷+=
1--=
×9 ÷=
×÷×=
×= 1.8×= ×= ×=
×= ×24= 2.4×= ×0=
×2.1= 12÷ = × = ×15= 1÷4× =
0.15× = 1÷ = 0÷ = 24× = ÷ × ÷ =
2.4×5= ÷= 4.8×= ÷3×=
25÷25%= ÷= 35÷= ×÷×=