Jamie picked 17 flowers and Lindsey picked 12. They gave away 20 of the flowers. How many flowers were left?
9 flowers
15
Ali collected 137 stamps. He collected 27 stamps less than his sister. How many stamps did they collect altogether?
301 stamps altogeher
20
At Clara’s art exhibition, 120 visitors came on the first day. 20 fewer visitors came on the second day. How many visitors came to the exhibition on the two days?
220 visitors
15
Kim has 78 boxes of apples and 130 boxes of oranges. She sells some boxes of oranges. Now she has 159 boxes of apples and oranges left. a) How many boxes did she have at first? b) How many boxes of oranges did she sell?