文档介绍：+=
×2=
－=
×=
6×=
－=
×=
×100=
×=
÷=
÷
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=
+=
=
÷
÷=
＋=
×40=
×
=
×
×102=
=
÷
÷=
5/10
×2==＋55=－=
=
=×88=
÷6=×101=－=×=
6×=
=
×=
×100=
×=
÷=
÷
÷=
×
÷2=
÷
÷=
÷
×=
+=
÷4=
÷
÷41=
10÷
×10=
×
×1000=
×7=
÷
8=
÷
28=
÷
=
13=
÷
20=
24÷
=
×
=
×100=
6/10
=
=÷24=－=5=15=
=
=÷=
÷9=
÷=
÷2=
÷=
÷=
×100=
×
×4=
×
×=
×
÷=
1÷
÷=
0÷
÷=
5
÷
÷
24×=
÷=
58=
÷
=
÷
=