Use properties to find the sum or product. 34+0+18+26. also say what property you used.

34+0+18+26=78

Commutative property-  I can switch around the numbers, instead of just adding it like-34+0+18+26 I can switch the numbers around- 34+18+26+0=78 and I still get the same product.    

Also it is the sum not product.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

entering that problem on the tube might get you an answer