Trent caught 180 tadpoles then let 75% of them go. How many did he keep?
First find the number of tadpoles Trent released: 180 tadpoles * .75 = <<180*.75=135>>135 tadpoles
Then subtract the number he let go from the total number to find the number of tadpoles he keeps: 180 tadpoles - 135 tadpoles = <<180-135=45>>45 tadpoles
#### 45