16÷2=
20÷5=
45+21=
35-16=
46+27=
72-35=
5×9=
8×6=
43+28-36= 92-45-28= 82-(7+38)=
40﹣28= 71﹣32= 67﹣39=
80﹣70= 13+60= 8+50=
28+43= 100-45= 56+22=
72-58= 88+11= 89-41=
-8=7
24+=42
64-=46