120÷2= 63÷3= 80×5= 770÷7=
9×300= 76﹣40= 0÷11= 810÷9=
89×5≈ 103×6≈ 504×9≈ 698×8≈
+ = ﹣ = + = + =
﹣ = + = 1﹣ = 1﹣ =