Solve. Cars In the school parking lot there were 113 fewer bikes than cars. There were 185 cars. How many cars and bikes were in the parking lot? Bikes 185 - 113 185 (about 190 - Round to the nearest ten to estimate. Then complete the chart. (about 190) or - -- = X X= cars and bikes. Estimate: There were about Actual: - - = X X = 1 Solution: There were cars and bikes in all.