Can someone help me with math?please?

Question

Does anyone know how I can memorize all the divinability rules??????? From 2 3 4 5 6 8 9

uncreativenames · Answer

Try to understand them best. At 2 and 5 for example: We know that 10 and all its multiples (20, 100, 1000000 etc.) can be divided by 2 and 5. Therefore, only the last digit is important for the partiality. ie a number is then exactly by 2 or 5 if the last digit is divided by 2 or 5 can be divided.
In the case of the second, this paragraph applies only to points 0 and 5.

So try to understand these rules for as many of the numbers as possible (There is happily material for it on the Internet). For those you don't understand, it's like learning vocabulary: write on map cards and learn them until you can memorize them.

Success 🙂

rhenane · Answer

A number can be divided by 2 if the last digit can be divided by 2.
A number can be divided by 4 (=2*2) if the last two digits can be divided by 4 (or 2 times by 2).
A number can be divided by 8 (=2*2*2) if the last three digits can be divided by 8 (or 3 times by 2).
A number can be divided by 3 if its cross sum can be divided by 3.
A number can be divided by 9 if its cross sum can be divided by 9.
6=2*3, i.e. a number can be divided by 6 if it can be divided by 2 and by 3.
A number can be divided by 5 if the last digit can be divided by 5, ie is 0 or 5.