文档介绍:- =
-=
+=
- =
+ =
-=
- =
+=
-=
1-=
+ =
5
×400=
+=
187
÷ 1000=
1+=
×10=
75
÷10=
÷=
× 7
×=
6×=
-=
×=
×100=
×
=
×=
÷7=
× 100=
÷
=
×8=
÷=
÷2=
÷
28=
÷=
÷ =
×9=
÷
24=
× =
+=
- =
÷ 4=
÷13=
÷5=
+=
10÷20=
24
÷ 15=
×10=
×=
× =
× 1000=
×=
×=
÷ =
÷9=
÷=
÷ 2=
÷ =
÷=
×100=
×8=
0.
56 ÷=
×4=
×=
÷=
× =
×=
×=
÷ =
1÷=
×=
÷ =
0
÷=
× 102=
÷=
5
×=
-=
÷
÷=
5
×=
24
× =
× =
+=
÷=
5
÷=
÷ =
÷=
÷5=
7
× =
÷ =
-=
÷=
÷8=
× =
8
+ =
× 30=
×=
× =
0
÷6=
÷ =
÷=
2÷5=
+ 5=
÷ =
÷=
× =
+=
8
× =
÷=
+ =
÷28=
10
÷ 20=
÷=
10-=
×=
+ =
÷ =
× 100=
×100=
÷ 2=
÷9=
÷ =
÷=
3
÷ 5=
7
×=
12÷=
×=
÷=
÷100=
+ =
×=
- =
×=
84÷=
÷=
×16=
÷ 2=
+ =
16
-=
÷13=
÷ 41=
× =
×=
× =
×6=
× =
÷=
÷=21
÷ =
× =
÷17=
÷ =
× =
× 4=
+ =
×=
×=
÷ 7=
72
÷ =
÷=
÷
÷ =
÷ =
+ =
÷8=
+ =
-=
2
÷=
×40=
× =
÷=
÷=
×=
+ =
×102=
×88=
++ =
8×=
7
÷=
÷÷ 6=
×× 25=
÷ =
× 101=
×101-=
× 7÷× 7=
× =
×=
÷7=
× 100=
÷ =
÷=
÷5=
7
×=
× =
÷=
÷ =
×=
× 2=
×10=
× 8=
×2=
+ =
÷28=
10
÷ 20=
÷=