490+203= 177+102=
67+200+321= 158+102=
543-23= 35+303-123=
399+1-200=
39÷9=
54÷9=
36÷8=
21÷5=
50÷7=
62÷8=
26÷6=
29÷4=
42÷6=
53÷9=
20÷3=
42÷7=
54÷9= 24÷6= 64÷8= 35÷7=
72÷8= 32÷4= 15÷5= 42÷7=
9.9×5.9 60 1