23+13= 58-40= 37-7= 18-6=
83+5= 30+48= 16-4= 36+6=
54-5= 17-9= 77-34= 38+7=
45-23= 26+13= 43+25= 66-65+8=
86-(54+6)= 56-20+3=
81+(45-40)= 89-7+7=
49+31-52= 99-63+36=
35-(40-5)= 76-(39+28)=
①62+18+15=
②84-42-17=
③80-6-24=
④100-75+25=
42+( )=80 50+25= 35-6= 30+26= 5×4=
40-9= ( )×6=30 3+65= 35-6= ( )-27=54
44+33= 3×3= 26-8= 19+11= 17-5=
30+40+5= 75-30-5= 15-8+3= 4×4+4= 3×5-12=
5×5= 8+8= 5×4= 6×2-8=
2×3+2= 6×3-4= 3×5+4=
8×2+1= 4×2+3= 3×7-3=
4×3+5= 3×6-4= 4×9-2=
×= 0.54÷6= ÷= 2.6×0.3= 27.8﹣1.9=