greg has building blocks.his sister gives him 17 more blocks. he uses 38 blocks to make a tower.how many blocks are not used in the tower?
Mathematics
laura86
Question
greg has building blocks.his sister gives him 17 more blocks. he uses 38 blocks to make a tower.how many blocks are not used in the tower?
1 Answer

1. User Answers cupcakesryummy
21 blocks, because if he uses 38 you subtract 17 and you get 21