Question

The 117 students touring a museum are separated into 3 equal groups. Their teacher decides to put 39 students in each group. Use estimation to determine if this answer seems reasonable.

Answer 1

Using estimation, multiplying 39 students in each group by the 3 groups gives us 117, which matches the total number of students. So, it is reasonable to put 39 students in each group.

Step-by-step explanation:

The subject of this question is Mathematics, and it is aimed at the Middle School level. The task is to use estimation to determine if the division of 117 students into three equal groups with 39 students in each group is reasonable. To perform a quick estimation, we can multiply 39 (the number of students in each group) by 3 (the total number of groups). This would yield 117 (since 39 x 3 = 117), which matches the total number of students. Therefore, the teacher's decision to put 39 students in each group is indeed reasonable as it equates to the total number of students on the tour. This is a basic arithmetic exercise involving multiplication and division, which also introduces the concept of estimation.