this doesn't add up vs something here doesn't add up

Examples:

• I've been looking at the numbers, but this doesn't add up.
• The story he told me just doesn't add up.
• Her behavior doesn't add up with what she said.
• The evidence presented in court didn't add up.
• The explanation given by the suspect didn't add up.

Alternatives:

• this doesn't make sense
• this is inconsistent
• this is illogical
• this is not adding up
• this is not adding up correctly

Examples:

• I've reviewed the report, and something here doesn't add up.
• We've checked the calculations, and something here doesn't add up.
• I can't put my finger on it, but something here doesn't add up.
• In this equation, something doesn't add up.
• After examining the evidence, something here just doesn't add up.

Alternatives:

• something is off here
• there's a discrepancy here
• there's a problem here
• there's an inconsistency here
• there's a puzzle here