Question

Gianna was asked to estimate the product of 29.6 and 3.2. Which of the

following numbers did she use to get a reasonable estimation?
A. 2 x 3 = 6
B. 3 x 20=60
C. 30 x 3=90
D.5 x 300 = 150​

Answer 1

The most reasonable estimate for the product of 29.6 and 3.2 is found by rounding the numbers to 30 and 3, respectively, which are simpler to multiply mentally, making the answer C: 30 x 3 = 90.

Step-by-step explanation:

The student asked a question on how Gianna could get a reasonable estimate for the product of 29.6 and 3.2. To estimate the product of two numbers, we often round them to numbers that are easier to multiply mentally.

The closest estimates for 29.6 and 3.2 would be 30 and 3, respectively, since these are the numbers we get by rounding 29.6 up to the nearest ten and 3.2 down to the nearest whole number. Therefore, the best estimation for the product of 29.6 and 3.2 is given by:

C. 30 x 3 = 90