Mrs Burton's totals for Countdown

2 x 5 = 10 
10 x 10 = 100
100 + 1 = 101

1 + 2 = 3
3 x 5 = 15
15 + 10 = 25

2 + 5 = 7
7 + 10 = 17
17 + 1 = 18

10 - 1 = 9
9 x 5 = 45
45 + 2 = 47

10 divided by 2 = 5
5 x 5 = 25
25 - 1 = 24

Did you get these? Are there any more totals you could make?