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=
6×3= 81÷9= 9×2+2= 100-20-15=
7×5= 20÷4= 6×8-8= 50-30+50=
21÷79÷3 24÷48÷2 3×412÷2
6×26÷2 10÷510–5 30÷630÷5