Question

Nika baked three cakes. Each cake needed 17/4 cups of flour. Which expression shows the best estimate of the number of cups of flour that Nika used?
4+4+4=12
5+5+5=15
4+4+4=16
17+17+17=51

Answer 1

Answer is 17+17+17=51.

Answer 2

17/4=4 1/4 cups of flour= 4,25 cups 

the best estimate is 4+4+4=12