1.69+0.1=
÷=
0.52=
﹣=
2.6×0.25×4=
﹣×0=
9.9×9+9.9=
×÷=
301﹣199=
+ =
×16=
÷ =
2.1﹣1.2=
3.2+1.8=
× ÷ × =
40×25%=
1÷0.25= 15×60= 72×25%=
1.1-0.01= 12÷ =
24×( )=
×= 18÷= ÷60%= 5.4×= ÷×=
0.088×100= 10.9+1.09= 3.6÷0.3= 900÷45= +-0.37=