12-2=
11-8=
7+5=
6+7=
13-4=
16-9=
15-7=
17-8=
5+9=
14+5=
10+10=
18-0=
16-7=
15-8=
11-2=
12-8=
15-6=
11-5=
14-6=
13-6=
12-4=
15-9=
11-3=
17-9= 83-23= 30+12= 45-20=
100-30= 55+30= 56-4= 14-8=
20+60= 88-80= 76-10= 35+4=
97-90= 75-50= 9+90= 27+50=
36+3= 17-6= 14-5= 20-7=
78-8= 24+30= 80-50= 15+65=
61-21= 59-14= 60-25= 50+26=
67+10 = 15-8= 21 +47= 33+40=
37-17= 46-30= 3+68= 52+9=
5+4= 0+13= 8-2= 7+7= 19-9=
6+10= 15-15= 3+8+5= 9-4+5= 6+7-3=
20->6 71一> 68 40> - 30
26->5 17->3 16+<25
①6.4×2.5×1.25
②8.5×98%
③÷4+×
④×
1.2+0.26= 0.03÷0.4= 1÷150%= 25×4÷25×4=
- = 3÷ = 16×( × )= + + + =