Sylvie had 51 baseball cards. She kept 3 of her favorite ones. She then shared them equally between her 4 friends. How many baseball cards did each of her friends receive?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?