松鼠弟弟采了多少个松果?
18
84
65
13-7=
28+5=
16-9=
48+40=
6+25=
24-6=
40+20=
38+6=
72-5=
46-30=
30+27=
56-7=
67-60=
25+9=
45-8=
21+9=
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=
12-7= 14-6= 8+5= 11-4=
18-9= 4+9= 16-7= 14-7=
13-6= 15-8= 11-5= 9+5=
11-2= 12-3= 13-4= 16-9=
①17-5-7=
②18-8+9=
③9+8-10=
④11+9-5=
⑤15+5-5=
⑥20-10+9=
⑦16-5+1=
⑧13+5-9=
⑨11+0+7=
⑩4+9+3=
×