14 - 7 =
15 - 9 =
16 - 8 =
31 - 5 =
20 + 40 =
85 - 5 =
44 + 7 =
93-90=
15-7+3=
8+(90-50)=
47+30+20=
丽丽:我今年6岁。
爸爸:你10岁时,我正好40岁
答:一共看了( )页。
10+30= 12-5= 80+6= 13-4=
14-5= 30+5= 15-7= 9+40=
8+9= 16-9= 10+0= 17-8=
18-9= 60+6= 45-5= 7+70=
69-7= 3+73= 4+56= 65+7= 56-7=
23+60= 57-6= 98-70= 24-6= 49+40=
84-3= 55-30= 16+8= 85-40= 50-7=
50-30= 26+9= 13+80= 80-60= 49-8=
40+2= 38-9= 6+64= 81+3= 20+57=
99-9= 50+40= 39+30= 78-20= 14+5=
13-4= 18-8= 9+10= 77-7 = 20+8=
60+6= 7+40= 16-8= 11-5 = 14-7=
20+7= 86-6= 15-9= 13-4-5= 3+9=5=