1. to add incorrectly; to make an error in addition
Usage: transitive verb; often used in mathematics or accounting contexts

Examples

• I misadded the column of numbers and got the wrong total.
• She misadded the expenses on the invoice, causing a billing error.
• The accountant misadded the quarterly figures by several thousand dollars.
• If you misadd these fractions, your final answer will be incorrect.
• He misadded the scores and announced the wrong winner.