-Keep track of who is in the hand.
-Keep track of the action. (Ask the dealer if you don't know)
-Round the numbers to make it easier. I like to go by 5's.
-Memorize common draws like OESDs, FDs, etc
So, if there is $44 in the pot and I'm facing a $29 bet and call, I'd round it to: $45 + $30 + $30 = $105. I have to call $30 to win $105.
Reviving this thread as I have an input.
First of all, I like your rounding off advice. However your math is wrong. That's why I am reviving to dispell unintentional bad advice. You don't add your bet you must call to the ratio of
pot odds. There are ways of calculating EV that add your call to the total. But not pot odds.
I really like the rounding off. You keep at count on each street. I make a mental note of the pot. Watch bets or raises and multiply them by callers + the pot and add them up. The two totals can cause a conflict in your short term memory. I assign a letter to the pot. Like P20. It sticks better.
Forget about counting ratios like Pot 75 and 30 to call, 75:30 As was pointed out it's a massive tell you are drawing. You must memorize a table!
Speaking heads up:
If the raise is Pot. You need at least 33%
2/3 of pot, you need at least 28%
1/2 pot, you need at least 25%
1/3 pot, at least 16% (i think).
Best is to calculate it via imply odds. Multiply his bet by what you need. Minus the pot + his bet from the total. The difference you either must be able to get or otherwise fold.