17-8= 11-3= 53-50= 6+2+8=
40+2= 16-7= 17-9= 78-70+3=
89-9= 6+8= 82+7= 65-60+80=
75-30= 54+3= 65-5= 8-5+30=
13﹣4=
69+1=
51﹣9=
40﹣20﹣20=
5+40=
24+5=
37﹣5=
39﹣(14+6)=
64﹣30=
28+30=
8+24=
45+(10﹣7)=
我会算:
答:图书角还剩□本书
40+30+8=
90-10-60=
26+40-4=
87-70+3=
63-(14+6)=
53-(37-7)=
44+33=
27+12=
47-25=
92-81=
41+48=
88-38=
85-40=
20+80=
59-50=
37+13=
50-7=
45-6=
5+37=
78+20=
38+9=
28-9+40=
45-40+32=
28-10+9=
25+9-6=
13-7= 12-5= 11-4= 25+70-80=
14-9= 28-5= 44+5= 32-2+58=
27-5= 63-50= 89-6= 90-50+42=
90-40= 48+20= 6+63= 40+20+6=
13-6= 86-60= 39-20= 54+3-5=