Multiplication is a way of adding the same number multiple times. When you multiply 3×3, you're adding the number 3 three times:
3×3=3+3+3=9
So, 3×3=9 means that you're taking three groups of three, which equals 9 in total.
Frequently asked questions (FAQs)
What is the standard deviation of a dataset with values 10, 12, 15, 18, 20?
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Find the x-intercepts of the equation y = 3x^2 - 5x + 2.