A whole number is added to a number with two digits after the decimal point. To make sure the answer is reasonable, how many digits should the sum have after the decimal point?

Question

A. none
B. 1
C. 2
D. infinitely many

Answer 1

C. 2.

When you add a whole number to a decimal, the whole number can be thought of as having two digits after the decimal point (e.g. 4 can be written as 4.00). Therefore, when you add them together, you should expect to have two digits after the decimal point in the answer.

Answer 2

Which of the following cereals is the best buy?
(1 point)
Responses

28 oz. of cereal for $4.29
28 oz. of cereal for $4.29

32 oz. of cereal for $4.59
32 oz. of cereal for $4.59

36 oz. of cereal for $4.79
36 oz. of cereal for $4.79

24 oz. of cereal for $3.59