□＋□=□                        □－□=□

□－□=□

4＋6=                10－7=               8＋2=                 10－9=

5＋5=                10－3=               3＋7=                 10－1=

10－6  5            10＋6 15           3＋6  10－5

4＋6  7            10－2  6           10－6 10－4

□＋□=□

□－□=□

□－□=□

□＋□=□

□－□=□

□－□=□