7+8=
14-9=
8+5=
8+6=
16-8=
8+8=
11-7=
11+8=
16+3=
10+9=
12-9=
14+5=
15-10=
13+4=
12+5=
1009+90 72-260+8 16-816+8
68角4元+3元 35-735-9 76-(6-4) 76-(6+4)
12+6=
14+3=
6+11=
7+13=
9+10=
15+2=
4+13=
8+12=
13+6=
15+4=
16+4=
9+8=
10-3=
15+3=
28+8= 60+24= 6+24= 45-6+30=
15-7= 19-9= 9+79= 40+22-9=
75-6= 86-60= 35+30= 53+(25+5)=
57-6= 58-50= 40+50= 86-(20+10)=
30-4= 50-6= 70-8= 80-3= 60-2=
21-8= 32-6= 43-4= 54-9= 65-8=
76-9= 87-8= 91-3= 35-8= 23-5=
44-5= 36-9= 23-8= 54-6= 60-8=
13-5= 30-9= 2+70= 7+7-6=
36+40= 86-50= 55-5= 63-9+10=
48+2= 8+20= 81+7= 21+5+6=
63-6= 47+6= 72-7= 56-(16-6)=
16-8= 2+48= 19-7= 29+2=
57+3= 13-6= 12-8= 57+7=
16+3= 53+9= 6+27= 3+78=
24-6= 86-40= 15-9= 46+23=
65-5= 90-7 = 50+34= 28-19=
15-7=
9÷9= 1000﹣40= 300+70= 8÷1= 2500+1500=
60+30= 1500﹣600= 0×8= 608+291≈ 908﹣198≈
2.3×6= 6.5÷0.01= 0.36÷0.4= +=
0.82= 1.2×= -= 4.3÷2.5÷4=
7.15﹣1.5= +0.25=