13+4=
9-6=
10+9=
9+7=
17-7=
6+6=
14-3=
8-8=
15-4+3=
12-2-7=
7+4+5=
8+6-4=
2+9= 7+5= 10+8= 6+9=
5+8= 4+8= 16–6= 9–5=
7+8 = 3+7= 9+4= 14+5=
6+8 = 5+9= 9+9= 18–6=
18–7+4= 17+2–6= 18–3–2=
19–5–5= 16–2-1= 3+5+9=
16-=7 5+=13 +3=11
14-=4 6+=15 9-=9
10+5= 16-6= 1+13= 10+4=
13-10= 19-9= 8+10= 12+7=
17-6+7= 16-6-3= 12-2+4= 11+4-2=
8+413 17-1011 8+87+7
6+410 9+618 8+319-9
+0.625= ×= 24÷40%= 7.2÷0.9÷0.8=