Mental Math Multiplication - Instantly multiply with numbers ending in 5

With this mental math trick you will be able to multiply these numbers in your head rapidly - a critical skill in everyday math. In this video we look at tips on how to do multiplication instantly without using a calculator. Fast math is good math! To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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