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)
Math question: Convert 750,000,000,000,000,000 to scientific notation. (
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Find the missing length x in △ABC if AD ║ BC, AB = 8cm, AC = 12cm, BD = 4cm, and CD = 6cm.
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Math question: Find the 5th order derivative of f(x) = 3x^4 - 2x^3 + 5x^2 - 7x + 9.