Kyle has some pennies in his bank. He used 75 pennies to buy a pen. Now he only has 24 pennies in his bank. How many pennies did Kyle have at first?

Mrs. Randall baked 72 cookies last wekend. She gave 21 cookies to her children. How many cookies did Mrs. Randall have left?

Dwight had 48 baseball cards. He put some on his bicycle wheels. He then had 26 cards left. How many cards did Dwight put on his bike?

Sydney is training for a green belt in tae kwon do. She practiced 35 minutes on Wednesday. She practiced 20 minutes longer than that on Thursday. How long did Sydney practice on Thursday?

Tony is measuring how far his toy car can roll. He measured 74 centimeters the first time. He measured 97 centimeters the second time. How much farther did his car roll the second time?