A group of 120 students were asked how old they were when they lost their first tooth. 50% said they were 7 years old. How many students said they were 7 years old when they lost their first tooth? Explain.

Answer 1

To find out how many students said they were 7 years old when they lost their first tooth, we need to calculate 50% of the total number of students in the group.

1. Start with the total number of students: 120.

2. Calculate 50% of 120. This can be done by multiplying 120 by 0.50:

   \[ 120 \times 0.50 = 60 \]

Thus, 60 students said they were 7 years old when they lost their first tooth.