文档介绍:+=
×2=
-=
×=
6×=
-=
×=
×100=
×=
÷=
÷
÷=
×
÷2=
÷
÷=
÷
×=
+=
÷41=
10÷
×10=
×
×1000=
×7=
÷
8=
÷
28=
÷
=
20=
24÷
=
×
=
×100=
=
=÷24=-=15=
=
=÷= ÷9= ÷=
1/10
÷2=
÷=
65÷=
×100=
×
×4=
×
×=
×
÷=
1÷
÷=
0÷
÷=
5
÷
÷
24×=
÷=
58=
÷
=
÷
=
×
=
×
=
×=
=
5×
×=
÷=
÷=
=
=
=×102=-=
2/10
=
=
=÷=
÷5=
7×=
÷=
-=
÷=
÷8=
×30=
9÷6=
÷
2÷5=
÷=
8×=
÷28=
10
11-=
÷=
××=
8
×=
×
=
÷
+5=
×=
÷=
÷20=
×=
100=
×+=
3/10
=
=÷=+=+=÷0.+4==100=
÷2=
÷9=
÷=16-=
×=
×6=12÷=
×
÷100=
-=
÷=
×
+=
16
÷41=
×
×=
×
÷=
÷
×=
÷=
÷
+=
×=
84÷
16=
÷
-=
=
×
6=
×
=
21÷
17=
÷=×=
=
2=÷13=
4/10
=
=
=
=×=
÷4=
+=
×=
×=
÷4=
÷=
÷
÷=
÷8=
2÷=
÷=
÷
+=
8×=
÷
××25=
+