文档介绍：99+11=
×0=
160÷40=
÷=
=
7200÷9=
9600÷300=
÷19=
÷
8=
1x24+24=
11x9=
÷
14=
980
÷
80=
(84+16)
÷
4=
×
200=
=
400
19×4=
0÷150=
÷=
×30=
270÷30=
150÷15=
960÷16=
4000÷500=
400÷50=
÷4=
÷=
=
÷
=
64-4=
÷
5x25=
50-35 7=
÷=
540÷90=
32÷=
0÷460=
÷41=
540÷60=
=
350×=
200÷40=
350÷70=
300÷60=
+÷4=
=
76÷4=
360÷20=
420÷7+140=
÷
21=
÷
180=
÷
2=
1300x300=
3600
74
÷
16=
=
÷
19=
÷
100=
48
57
2600
=
420÷30=
810÷90=
18x700=
40÷2=
660÷30=
:=
420÷70=
720÷4=
6400÷800=
128÷=
360÷40=
=
÷
35=
÷
=
+=
70
3300x30=
=
÷
71=
×
2=
142
14x300= 650÷13= 480×= －=
1500÷300= 800÷16= = ×=
6×=
÷13=
－=
÷5=
×=
÷41=
×100=
10÷20=
×=
24÷15=
÷=
×10=
÷7=
×6=
÷100=
×=
÷=
×100=
×8=
×=
÷=
×=
÷2=
÷=
÷28=
÷9=
÷=
÷=
÷=
÷2=