现在车上有多少个小朋友?

2+4+3= | 9-7+3= |
8+2-8= |
1+5+3= | 9-6+2= |
8-3-3= | 6+4-5= |
10-8+2= |
1+4+2= | 2+8-5= |
7-2-3= | 4+4+2= |
8-5+6= |
4-3+2= | 10-8+3= |
10-8= 5+4= 7+2= 8-1=
9-4= 5-4= 6-2= 7-7=
10+0= 10-3= 10-0= 4+4=
3+4= 1+5= 8-3= 7+0=
10-3-3= 2+2+4= 1+8+0= 3+4-2=
6-3+7= 3+5-6= 9-7-2= 8-6+4=
9-3= 4+4= 7-3= 1+4+2= 10-3=
3-0= 10-7= 5-2+2= 8-2-4= 2+5=
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6-4= 2+3= 9-3+2= 8-4-4=
4+5= 7-3= 8+2-3= 3+6-8=
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7+1-2= 10-4-3= 4+3+1= 8-0-3= 9-3-5=
8-4+3= 6+1-7= 2+8-5= 9-4+5= 5+3+2=
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3+5= 1+7= 2+4= 10-7= 9-5-4=
7-4= 4+5= 7-0= 3+3= 3+4-1=
2+8= 9-2= 0+8= 10-4= 2+3+5=
5+5= 10-10= 4+6= 7+2= 9-0-4=