Mental math is basically math in your head so for example 40x2=80 so I did that in my head
how to do mental math useing propertys
510 divide by 52 using mental math and using long div = 9.807692307692308
by using a calculator
by using your brain
it means to work out or solve using math
No difference. Both require you to think it out rather than write it out.
If you use mental math, you can't go back to see where you messed up. Plus some teachers are picky and want you to show your work. But unless you're very good at math, and can do it mentally and not get a single thing wrong, then good. However, I think you should still solve it on PAPER.
80 divided by 40 is the same as 8 divided by 4, which is two.
you answer it!
13.48 - 6.1 in mental math = 7.380000000000001
Use a variable to represent the unknown. 'Translate' the words to math symbols and write an equation to solve. Solve the equation. Check.
GIMME THE ANSWER
mental math is doing the math in your head or in your mind but not in a calculator or pencil and paper
Ask you math professor
variable equation solve it test it
The value of b must be 8