5×8=40 6×8=48

40 48

\ /

448

Not sure how popular this is, but if you learn it, you can figure out how to do it on very large numbers.

An easier way to break this down is 75 x 3 add a zero ‘0’ = 2250 + 75×3 (225) = 2475. Basically what you did – but for some it becomes complicated when you say, 75 x 3 x ’10’ – because we were taught weird in school, we try to ‘visualize’ the actual multiplication problem as though it were written down – that’s when we start losing track of what goes where and get confused. This is a great method that I’ve been learning for dealing Pot Limit Poker games. I’ve got a lot of practice to do still; and I tend to ‘freeze’ when I’m at the actual table dealing. I’m hoping to get better and gain more confidence for these games.

]]>Sorry for not replying to this comment earlier. If I was presented with 75 x 33, I would choose to break up the 33 instead of 75, making the equation (75 x 3) + (75 x 30).

Why? Here is my reasoning:

* Multiplying by a number ending in a 5 is easy.

* Multiplying by a number ending in a 0 is easier.

* Multiplying by a single digit is easy.

* I would to multiply 75 x 3 once, but actually use it twice after applying a simple breakdown.

Back to the problem at hand: 75 x 3 = 225, 75 x 30 = 75 x 3 x 10 = 2250, and 225 + 2250 = 2475.

My point: Strategy is very important, but I would happily admit everyone’s thinking is different. What works for me may not work for anyone else. I like to multiply by factors of 5 and 10 efficiently, but someone else may be able to multiply by factor of 3 and 7 better.

Good luck with the book!

]]>@Mathematical Man Sounds very interesting. I have to check this book out. Thanks!

]]>you can use the placement method, place the number in a special corner in ur mind. Its fun. More like you throwing something in the corner of your room!

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