Jonah saw a news report that stated that 72% of children in his town played a sport last year. If there are 4,000 children in his town, how many children in his town played a sport last year?

The number of children who played a sport last year is 72/100*4000 = <<72/100*4000=2880>>2880 children. Answer: \boxed{2880}.

To find the number of children in Jonah's town who played a sport last year, you can follow these steps:

Step 1: Convert the percentage to a decimal.
To convert a percentage to a decimal, divide it by 100.
72% ÷ 100 = 0.72

Step 2: Multiply the decimal by the total number of children in the town.
0.72 x 4,000 = 2,880

Therefore, 2,880 children in Jonah's town played a sport last year.

To find out how many children in Jonah's town played a sport last year, we can use the percentage given and multiply it by the total number of children in the town.

1. Start by converting the given percentage to decimal form. To do this, divide the percentage value by 100.
72% ÷ 100 = 0.72

2. Next, multiply the decimal form of the percentage (0.72) by the total number of children (4,000).
0.72 × 4,000 = 2,880

Therefore, 2,880 children in Jonah's town played a sport last year.