22
9 + 6 + 9 + 6 + 9 + 8 + 5 + 2 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 99
6 + 5 + 3 + 2 + 9 = 25
3 + 5 + 6 + 9 + 2 + 1 + 10 = 36
6+9/5-2*6 = -4.2
53
1 + 6 + 9 - 8 + 4 - 5 + 2 + 3 = -6
58
Do the multiplication first, giving 5 + 6 + 6 + 9, ie 26
TWENTY 20 2+3=5+6=11+9=20
6/5 + 2/-9 = 44/45
6 plus 7
1+2+3+4+5+6+7+8+9=37