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