Hold'em table

With 55 on the button, raising applies pressure and can take down the blinds; if called, I have position and set-mining potential.

5♠8♠ is too weak to continue out of position against a button raise, especially with the big blind still to act. Folding preserves chips.

With 8c-Jd on the button facing a 300 chip raise, I have no pair, no suited connectors, and no high card strength. Folding preserves my 100bb stack for better spots.

Seat 2 folded, leaving only the big blind. With 5c Kc I don't want to play out of position for just a 50 chip call, so I fold to avoid a marginal spot.

7-3 offsuit is a weak hand, and I'm out of position on the button facing a 100bb big blind raise with no prior action to justify a speculative call.

Getting 3:1 pot odds to complete the small blind with a marginal offsuit hand; I'll see a cheap flop and can fold to further aggression.

Checking with Q8o in the big blind keeps the pot small with a marginal hand while maintaining position on the limper postflop.

I have a weak hand with only a gutshot and backdoor spade draw. Checking controls the pot and lets me see a free turn out of position.

I have top pair with a decent kicker on a wet board, so I should bet for value and to charge draws. A 150-chip bet builds the pot while keeping pressure on weaker hands.

I have only a gutshot with T high on a KQ9 flop and am facing a 150 bet into 200; pot odds are insufficient and opponent likely has top pair, so folding is best.

Three-handed button with J7o is a standard open; raising to 300 applies pressure and gives me position if called.

Q6s is too weak to continue out of position against a raise, and calling would put me in a marginal spot with poor playability. Folding preserves chips for better spots.

Seat 1 raised to 300 and seat 2 folded, leaving a heads-up pot with me on the BB. My 2c2d is a medium-strength hand that can defend the blind and build the pot, so I raise to 600 to apply pressure and charge for a potential call.

J7o is too weak to continue against a 3-bet, even with position; folding avoids losing more chips with a dominated hand.

J8c is a weak hand and I'm out of position. The small blind posted 50 and the big blind has 100 invested; I don't want to call 50 more with a speculative hand that needs help. Folding preserves my stack.

4h5d is a weak hand with no immediate equity or playability. Facing a 100 big blind raise from the BB with 100bb effective, folding is the most +EV decision.

I hold pocket aces, the strongest starting hand. Raising to 300 builds the pot and extracts value from the big blind, while keeping my range balanced.

I have a suited connector in the big blind and only need to call 200 into a pot of 400, so the price is good to see a flop.

I have pocket aces on a Q-high flop and want to bet for value while charging flush and straight draws. A 400 bet into 600 is a strong but callable size.

I have middle pair with position and am getting good pot odds, so calling is profitable. I can reevaluate on the turn if the opponent bets again.