文档介绍：: .
得分:__________ 4= 61+5= 32+9=
40-7= 97-9= 62+8= 66-0= 72-3=
51-1= 33+7= 13+3= 89+8= 73-4=
77-5= 74+7= 93-6= 16+2= 22-2=
55+3= 49-5= 68+7= 22+2= 95-4=
11+2= 49-2= 59+6= 12+6= 38-4=
57-2= 61-7= 47-4= 76+9= 20-6=
19-7= 22-7= 54-2= 16-3= 39-9=
38+1= 46+3= 38-3= 58+6= 93+6=
41-2= 89-1= 88+0= 55+5=得分:__________ 计时：
29-11= 16- 4= 89-24= 29- 8= 98-77=
52-50= 24-10= 10+20= 14+20= 31-4=
17- 7= 19-10= 98-80= 25-4= 99-20=
24- 3= 15+ 4= 90-10= 20+8= 25+ 3=
18+20= 28+2= 29+1= 25+20= 26-10=
12+5= 28+7= 25+8= 23-3= 12+10=
16+30= 24+4= 19+40= 17-2= 18-8=
19-6= 29+10= 72-10= 20+30= 99-90=
12+6= 60-40= 17-8 = 90-40= 16+50=
20-10= 70-50= 50-30= 60+30= 12+6=
28+6= 16+8= 20+8= 50-50= 19-8=
18- 5= 88+ 2= 66- 6= 90-30= 65-7=
50-20= 87-7= 80+9= 18-4= 13+8=
15+80= 16+ 4= 14+4= 89-80= 14+6=
56-40= 66-20= 99-6= 66-10= 19+60=
17-( )=0 17-10= 15-3= 80+4= 26-7=
19-( )=13 27-5= 18+( )=20 14+( )=27 67-5=
16-( )=12 65-30= 65+20= 24+40= 8+( )=16
10+( )=50 65+( )=70 ( )-20=50 40+( )=60 20+( )=30
87-6= 16-6= 80-( )=0 75-7= 30+30=得分:__________ 计时：
69+ 3= 47- 6= 59+10= 28+ 9=