2+15%=
3+=
2÷1%=
125×8=
×=
6.9﹣1.4=
×3=
÷=
1.2×0.3= ﹣= 32÷53×0=
0.25÷= 1﹣0.09= +20%=
a﹣0.6a=
158÷199=
1÷20%=
1.5×0.8=
1﹣0.38=
0.9×0.8=
=
101×98=
3.6÷1000=
2.56×4.9×0=
1÷0.25= +1 = ×24= + =
400×0.02= 10÷ = 6 ×0= 3× ﹣ ×3=
480÷60= 3.72+6.28= +×1=
235+99= ﹣= 12×÷12×=
元 角