The experimental primary school held a concert. There were 15 people in each class participating. How many people were there in Class 3 of the second grade?

45 people. There is a concert in the experimental primary school. There are 15 people in each class. How many people are there in Class 3 of the second grade? This question can be solved using mathematical multiplication. The formula is 15 times 3, and the result is 45. Multiplication is a shortcut for adding identical numbers. The result is called the product, and the "x" is the multiplication sign.

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