What is 97 times 93?

What is 97 times 93?

Approach: Use (100 - a)(100 - b) or (x+y)(x-y) if applicable.

9021. (100 - 3)(100 - 7) = 10000 - 700 - 300 + 21 = 9021.

Follow-up: What is 95 squared?

Key concepts: distributive property, mental shortcuts.