3.2+4.57= 407+11.3+5.3= 0.25×（44﹣8）= 0.9+99×0.9=
6.38×8×125%= 10÷0.1﹣0.1÷10= 7.9×4+2.7= 4﹣4×0.6= ．
3.2+4.57= 407+11.3+5.3= 0.25×（44﹣8）= 0.9+99×0.9=
6.38×8×125%= 10÷0.1﹣0.1÷10= 7.9×4+2.7= 4﹣4×0.6= ．
﹣
= 
×
= 12×
= 1÷
=
= 
= 1.6×4×0.25= 0÷
=
+
= 
÷6= 
×
= 2﹣
+
=
×16= 6﹣
= 
÷
= 5×
÷5×
= 
=
= 
=
= 75%÷25%=
= 
=
= 
= 
= 
=
= 
= 
= 
=
= 
= 
= 
=
+0.2= 
+
﹣0.2= 5÷
= 
×1.5+3=
= 
×1.5= 
﹣
= 1﹣137.5%=
粤公网安备 44130202000953号