文档介绍：+15 X 6=
X 8X 5=
- 5X 8=
- 3X 200=
X 5-2X 4=
+20 - 2=
X 3+8=
- 25-5=
- 4+20X 5=
+8-40=
+12 - 3+20=
- 40=
7.(80 - 20+80) -4=
- 14 =
+(100- 10X 5)=
- 24 =
- 40=
- 14 =
X 20=
- 13 =
-25=
- 15 =
+45=
- 24 =
X 2=
- 25 =
X 6=
- 16 =
X 6=
- 21 =
- 9=
- 14 =
X 20=
- 13 =
- 4=
- 15 =
-80=
- 24 =
+70=
- 17 =
- 64 - 8=
- 15 =
- 6+20=
- 16 =
- 5X 7=
- 26 =
+60 - 3=
- 17 =
+18 - 2=
- 40 =
- 11 X 5=
- 20 =
+7-29=
- 4 =
- 80=
- 40 =
X 16=
- 4 =
X 25=
- 60=
X 11 =
- 2 =
- 25=
- 4 =
+70=
- 5 =
X 9X 4=
- 8 =
- 33X 3=
- 4 =
-1010=
- 6 =
X 50=
+80 =
X 8=
-80 =
X 11 =
X 80 =
- 25=
- 80 =
-2200=
- 16 =
+80=
- 24 =
X 5=
X 250=
X 518=
X 25=
X 76=
X 11 =
X 10=
- 25=
X 6=
+70=
X 3=
X 9X 4=
X 18=
- 33X 3=
X 4=
-1010=
X 15=
X 50=
X 30=
X 8=
X 15=
X 11 =
X 12=
- 25=
X 30=
-2200=
X 50=
+80=
X 700=
X 8X 5=
+15 X 6=
- 3X 200=
- 5X 8=
+20 - 2=
X 5-2X 4=
- 25-5=
X 3+8=
+8-40=
- 4+20X 5=
- 40=
+12 - 3+20=
- 14 =
7.(80 - 20+80) -4=
- 24 =
+(100- 10X 5)=
- 14 =
- 40=
- 13 =
X 20=
- 15 =
-25=
- 24 =
+45=
- 25 =
X 2=
- 16 =
X 6=
- 21 =
15