6÷80%= 1.74+7.5= 0.53= 3-3÷4= ×0.4÷×0.4=
2分米:4毫米= 4+ = 3.35+6.65×0= ( ):0.25=1 61×29≈
6.4-3.32=
578+298=
48×25%=
-=
1÷=
4÷=
12×2.5=
+=
4.35÷0.5=
302×8.89=
799×20=
521+46=
10﹣0.8=
204×5=
8.5÷0.5=
360÷5÷2=
=
10﹣7.6=
8.32÷4=
2.4×5=
5÷2.5=
0.39×100=
0.1+0.09=
1÷=
=
×4=
÷ =
3+ =
×5÷ ×5=
× =
÷8=
5﹣ =
( ﹣ )×24=