文档介绍：82+6=
91-2=
98-3=
8+14=
68-20=
90-80=
20+64=
10+29=
49+0=
39-0=
40+4=
40+31=
81-5=
18-2=
95-0=
15-4=
96-10=
50+34=
1+21=
63-20=
70-60=
92-20=
72+7=
24-9=
66-50=
83-3=
30+35=
22+7=
90-40=
82-10=
70+13=
12-4=
26-20=
40-30=
68-50=
19+5=
8+27=
39+40=
8+47=
84-20=
10+20=
73-4=
4+96=
97-0=
74-30=
82-30=
60+31=
20+68=
50+46=
86-20=
74-0=
25-0=
23+30=
36-5=
42-30=
50+2=
18+70=
33+6=
30-7=
41-30=
32-1=
1+94=
31+4=
9+38=
98-10=
81-9=
48-5=
90-8=
70-13=
92-20=
80-30=
71-10=
20+78=
68-10=
32-30=
15+3=
46+1=
84-4=
82+6=
69-20=
0+99=
30+45=
70-40=
90-80=
54-40=
78+7=
84-80=
41-0=
40+4=
63-40=
36-5=
74-8=
43-3=
15-4=
73-50=
3+87=
50-40=
1+16=
70-60=
40-10=
口算练****1 月日时间
口算练****2 月日时间
91-50=
45+40=
9+71=
83-3=
81-40=
5+93=
40+3=
20+36=
70+13=
40+30-50=
39-6=
99-8=
92-1=
70+22=
21+30+8=
74-50=
7+48=
60-30=
72-30=
79+3=
30-7=
91+5=
80-10=
69-30=
9+26=
84-9=
64-60=
90-10=
68-20=
11-6=
70-50=
31-0=
77-30=
39-0=
8+57=
83-33=
86-50=
52-40=
95-0=
45-9=
70+23=
95-50=
95-40=
63-20=
25+7=
70+25=
85-50=
97-40=
66-50=
49-6=
75-30=
71-40=
77-20=
82-10=
90+9=
46-20=
73-10=
88-20=
68-50=
76-60=
45-20=
67-30=
35-30=
84-20=
86-5=
73-40=
48-30=
35-20=
74-30=
47-5=
85-10=
66-40=
83-10=
86-20=
43+30=
84-80=
92-80=
49-20=
42-30=
8+45=
30-0