78-6=
81+5=
65-5=
87-9=
72+5-9=
3+80=
77-70=
40+30＝
14-9=
10+7-8=
13-5=
90-80＝
98-8=
13+20=
80-20+8=
20+80=
12+26=
55+20=
21+5=
13-9+20=
45+3=
30+9=
53+7=
42-5=
67-4=
86-80=
91-5=
28+6=
50+50=
50+5=
70-30＝
48+6＝
42+50＝
35－7＝
18+20＝
54+40＝
33+30＝
56－8＝
52+20＝
65-5＝
14 - 7 =
15 - 9 =
16 - 8 =
31 - 5 =
20 + 40 =
85 - 5 =
44 + 7 =
93-90=
15-7+3=
8+(90-50)=
47+30+20=
11-2= 13+10= 50-40= 20+5= 15-9-1=
15-5= 18-9= 80-70= 77-7= 14-5+20=
50+4= 65-60= 13-5= 16-8= 13-6+7=
40-30= 12+20= 14-5= 82-2= 50-30+8=
