Question

60% of the 50 students in Jessie’s gym class are 12 years old. How many students in Jessie’s class are 12 years old?

A tape diagram. There are 60 students out of 100 that are 12 years old. There are question mark students out of 50 that are 12 years old.

What steps should you use to find 60% of 50? Check all that apply.
100 ÷ 20 = 50
100 ÷ 2 = 50
60 ÷ 2 = the number of students who are 12 years old.
60 ÷ 20 = 3 students
60 ÷ 2 = 30 students
30 of the 50 students are 12 years old.

Answer 1

60 ÷ 2 = the number of students who are 12 years old.

60 ÷ 2 = 30 students

30 of the 50 students are 12 years old.

Explanation:

Change the percent to a decimal

.60 *50 =30

We can rewrite the decimal as a fraction

60/100 *50

We can change the order

60 * 50/100

60 *1/2

Multiplying by 1/2 is the same as dividing by 2

60 ÷ 2 = the number of students who are 12 years old.

60 ÷ 2 = 30 students

30 of the 50 students are 12 years old.

Answer 2

30 students

100 ÷ 20 = 50

60 ÷ 2 = 30 students

30 of the 50 students are 12 years old.

Explanation:

60% of 50

60 : 100

X : 50

60/100 × 50

3/5 × 50 = 30