10÷10%= 600×3%= 0.38×+0.62×0.25=
10.8-0.9= 75%-= ×0.28×7 ×0=
x÷15= 25%x-12.5%x=1 (1+ )x=18.9
×= ÷4= 1÷= ×0=
-= +1= 3.5×= ×40=
×= ÷= 1÷20%= 1.25×8=
0÷= 8÷= ×2.8= ÷0.4=
1÷0.25= 15×60= 72×25%=
1.1-0.01= 12÷ =
24×( )=