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?A. 4 + 4 + 4 = 12B. 5 + 5 + 5 = 15C. 4 + 4 + 4 = 16D. 17 + 17 + 17 = 51
Accepted Solution
A:
First we need to find out what 17/4 is.
17/4 = 4 1/4 so each cake needs 4 1/4 cups of flower.
Now, the question asks what the best estimate of the total number of cups is.
It could be A or C because 4 1/4 is closer to 4, but... we need to figure out if 4 1/4 + 4 1/4 + 4 1/4Β (we need to make three cakes) is closer to 12 or 16.