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

17/4 + 17/4 + 17/4 = 51/4 cups
51/4 = 12 3/4 cups