87-50=
89-50=
98-80=
97-70=
96-90=
55+40=
55+4=
26+30=
26+3=
5+43=
50+43=
4+51=
40+51=
= (个)
= (个)
26+30= | 18+27= | 700+2300= |
90-45= | 54-20= | 900+300= |
560-500= | 8000-2000= |
|
.
+=90 - =30 +40<80
20+43= 59-8= 40+60= 15-8= 46-6=
13+50= 68-40= 18-9= 78+20= 37-30=
14-5= 48-8= 56-4= 11-2= 28-3=
20-10= 21+7= 16-7= 8+32= 12-4=
9×3= 10×7= 4×5= 9×6=
8×7= 8+45= 72+5= 36-9=
57+19= 30+70= 5×8-20= 4×9+4=
32-20+50= 7+20-3=
裙子40元
裤子30元