Two and Two

'Two and Two' printed from https://nrich.maths.org/

Each of the different letters below stands for a different number.

How many solutions can you find to this cryptarithm?
How can you be sure you have found them all?

Can you create other similar cryptarithms?

Here are some suggestions to start you off.

ONE + ONE = TWO

ONE + TWO = THREE

ONE + THREE = FOUR

FOUR + FIVE = NINE

Can you make a cryptarithm subtraction?

If you enjoyed this problem you may like to take a look at Cryptarithms