

Juan puts 30 cents in his piggy bank today. He now has a total of 67 cents in his piggy bank. How much money did he have in his piggy bank yesterday?
Kevin has a total of 54 crayons in his cubby at school. If he just added 20 crayons today. How many crayons did he have yesterday?
Mr. Lang had 47 stickers. She bought 38 more. How many stickers does she have now?