文档介绍:+=
-=
+=
+=
+=
-=
+=
-=
-=
1-=
+=
-=
+=
-=
+=
++=
1--=
-=
+=
1-=
++=
32=
33=
3=
76÷19=
1-=
156÷26=
×=
360÷45=
80÷16=
-=
+=
×=
55÷=
55×=
2400÷30=
-=
+=
+=
+=
-=
-=
1-=
-=
-=
+×99=
1÷5+1÷5=
×101-=
-÷27=
573-(273+169)=
×11-=
5÷=
÷=
×16=
×40=
700-=
620÷200=
78÷16=
9001-8006=
144÷12=
+=
×5=
+=
6-=
×100=
÷100=
×4=
10-=
×=
÷=
×=
1+=
÷=
÷=
1-=
=
8×=
+=
-=
×=
÷=
÷4=
÷100=
÷=
×8=
×=
1×=
+=
÷=
+=
-=
÷2=
-=
×2=
÷3=
×8=
×1000=
×=
1÷125=
÷=
1÷=
48÷=
20÷=
1×=
÷3=
7-=
÷=
-=
×=
29÷100=
÷=
6+=
×8=
×0=
÷3=
÷=
÷=
100÷=
+=
×=