9.8×1000= 0.6+0.24= 10﹣9.09= 0.7﹣0.35=
0.5÷10= 0.23+7.7= 39÷10×1000= 100÷25×4=
6.7+3= 4÷100= 5.3﹣0.03= 6.08×100= ．
9.8×1000= 0.6+0.24= 10﹣9.09= 0.7﹣0.35=
0.5÷10= 0.23+7.7= 39÷10×1000= 100÷25×4=
6.7+3= 4÷100= 5.3﹣0.03= 6.08×100= ．
×
=
÷5= 1÷
= 15×
= 1.25×
=
×4=
÷
= 1.8﹣40%= 12×（
+
）=
×6+4×
=
=
=
=
=
=
=
=
=
=
=
=
×0
×
×12
÷
1÷
÷2
÷
×
×
．
②
×
③12÷
④
÷
．
×
= 2.4÷
= 7﹣
﹣
= 0.24×50%=
÷7=
×37.5%= 1÷
÷1=
÷
=
×
= 1
÷
=
×9+
÷
=
粤公网安备 44130202000953号