The phrase 'put two and two together' is a common idiom that means to use logic and reasoning to come to a conclusion. In this crossword, the solutions are all related to this phrase. INFER is a 5-letter word meaning to draw a conclusion from evidence or reasoning. ADD is a 3-letter word meaning to join or combine two or more numbers or amounts. ADDED is a 5-letter word meaning to join or combine two or more numbers or amounts. SUM is a 3-letter word meaning the result of adding two or more numbers or amounts. DEDUCE is a 6-letter word meaning to reach a conclusion by reasoning. ADDEDUP is a 7-letter word meaning to ADD up two or more numbers or amounts. COMBINED is an 8-letter word meaning to join or mix two or more things together. FIGUREDOUT is a 10-letter word meaning to solve a problem or mystery by using logic and reasoning. All of these words relate to the phrase 'put two and two together' and can be used to describe the process of using logic and reasoning to come to a conclusion.