A Neat Math Trick / myLot

United States

May 9, 2016 2:02pm CST

Most people don't know about this math trick. Are you having a problem with math then try this. What's 4 X 18? This isn't really a complex problem but a lot of people have a problem with it and would have to write it done. Instead do this? What is 8 X 9? First double the first number and halve the second, this will give you the answer in half the time it would otherwise take.

12 people like this

14 responses

Ricki Dillane

@ricki_911 (21625)

• Toronto, Ontario

9 May 16

Math has never been my subject

1 person likes this

marcyaz

@Marcyaz (35316)

• United States

9 May 16

@ricki_911 Hope you can remember this trick which could help you with your math.

Ricki Dillane

@ricki_911 (21625)

• Toronto, Ontario

9 May 16

@Marcyaz I wrote it down, and will be practicing for the life of me I can never figure math out without using my fingers.

1 person likes this

marcyaz

@Marcyaz (35316)

• United States

10 May 16

@ricki_911 I hope this helps you on some small way.

Valerie J. Routhieaux

@just4him (317249)

• Green Bay, Wisconsin

10 May 16

Okay, I got the first two without a problem, they are the same number. I got so lost in your last example I had to do it three times to figure it out and finally realized I was supposed to multiply not add. I prefer the first two ways. Less complicated.

1 person likes this

marcyaz

@Marcyaz (35316)

• United States

10 May 16

Lol glad you got it.

1 person likes this

Valerie J. Routhieaux

@just4him (317249)

• Green Bay, Wisconsin

10 May 16

@Marcyaz It took some effort and a calculator for that last equation. I kept doing it wrong.

1 person likes this

rebelann1949

@rebelann (112959)

• El Paso, Texas

9 May 16

Dad always told us to count in 10s. If the number is 84+39 he'd simply add 80 to 30 then 9 to 4 and then combine. This would be 110 + 13 which then comes out to 123. I liked his method a lot and it always helped me when playing cards.

1 person likes this

marcyaz

@Marcyaz (35316)

• United States

10 May 16

Yep that is another good way.

1 person likes this

Marlina

@marlina (154131)

• Canada

9 May 16

Good tip.

1 person likes this

marcyaz

@Marcyaz (35316)

• United States

10 May 16

Thanks I thought it was a good tip.

Jekca

@Jessicalynnt (50523)

• Centralia, Missouri

10 May 16

I know a few tricks, and can work that stuff out on paper, but most of the time just reach for the calculator!

1 person likes this

marcyaz

@Marcyaz (35316)

• United States

10 May 16

@Jessicalynnt It is best to be able to figure it out in your head.

1 person likes this

Chloe Flanagan

@puddleglum (1380)

• United States

9 May 16

That's a great trick!

1 person likes this

marcyaz

@Marcyaz (35316)

• United States

10 May 16

I thought it was also thanks.

1 person likes this

slund2041

@slund2041 (3314)

• United States

10 May 16

I have a lot of trouble with math. Thanks I am going to write that tip down, and practice it. Do you have other tips like this?

Oshy

@TiarasOceanView (70022)

• United States

9 May 16

What a neat idea.. I must remember that if needed Marcy.

Inlemay

@Inlemay (17713)

• South Africa

12 May 16

I love maths and this idea is quite fascinating. I used to teach my own children the way I remembered the Quick Maths

Jo Ann

@akalinus (43332)

• United States

9 May 16

I learned the times tables when I was a kid so I just automatically know the answer. That is a good trick though. A lot of people have trouble with math.

1 person likes this

marcyaz

@Marcyaz (35316)

• United States

9 May 16

@akalinus I also learned the times table but some have trouble with math and this might help them.

1 person likes this

Morley Hunt

@Morleyhunt (21744)

• Canada

9 May 16

One of the tips I've used many times. There is a lot to be said for the multiplication tables we memorized in elementary school. Those numbers are all still there. Just waiting for me to seek them out.