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超市还有多少箱梨?(用两种方法做)
50-5= 75-30= 70-7= 15-9= 68+5=
63-20= 95-8= 9+83= 47+6= 93-4=
31+20= 25-9= 36+6= 75+7= 56+8=
38-3= 30+16= 98-60= 65-6= 39+40=
18+6+9= 42-8-20= 60+29-80=
50+27-9= 65+(13+7)= 82-(58-50)=
53-(27-20)= 67-8-50= 27+(46+4)=
9+8= 12-3= 13-8= 30+5=
11-6= 7+8= 15-6= 75-5=
16-9= 15-8= 13-3= 15-7=
3+8= 7+7= 18-9= 6+50=
12-5+9= 20+5-5= 14-7+60=
9+8-7= 14-8+9= 77-70+9=
4+8+6= 11-3-3= 15-7+6=
50+4+7= 27+7-9= 19-5-8=
17-2+6= 37-4+5= 48+20+7=
20+8+6= 38-(30+8)= 50+17-7=
12+8+53= 65-8-50= 28+(46+4)=
85-(27-20)= 15+6+8= 42-8-30=
60+28-80= 50+27-8= 54+(18+2)=
92-(78-70)= 50+(18-9)= 57-(14+6)=
27+40+6= 75-5-40= 85-30+9=
60+(15-8)= 56+(13-7)= 93-(10+50)=
73-(46-40)= 82-(6+14)= 60-(13-5)=
52-(14-8)= 90-8+9= 40+(29+4)=
7+55= 57-9= 65+7= 53-8=
83+7= 73-5= 47-9= 27+9=
78+9= 82-50= 56+7= 59-8=
35-6= 29+7= 72-5= 72-30=
70-20-30= 90-5-20= 16-7+50=
83-20+5= 60+(14-7)= 58-(26+4)=
14+6+42= 60-8-30= 48+(18-9)=
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