1．
0 159627 159635 159641 159645 159651 159653 159657 159663 159665 159671 159677 159681 159683 159687 159693 159695 159701 159705 159707 159711 159713 159717 159719 159721 159722 159723 159725 159726 159727 159729 159731 159735 159737 159741 159743 159747 159753 159755 159761 159765 159767 159771 159777 159783 159785 159791 159795 159797 159803 159807 159813 159821 199269
| 用心才会赢 200÷4= | 42+9= | 32×20= | 720÷9= |
| 0×10= | 40×20= | 11×80= | 45×10= |
| 20×70= | 640÷8= | 240÷6= | 0÷32= |
| 20×30= | 40-40÷5= | 620÷20×0= | 700-25-75= |