Little Andy ate 3 slices 2 times giving a total of 3*2=<<3*2=6>>6 slices of bread
1 piece of toast bread requires 2 slices of bread so 10 pieces need 10*2=<<10*2=20>>20 slices of bread
There is 1 slice of bread left so in total there were 6+20+1=<<6+20+1=27>>27 slices of bread in the loaf
#### 27