Larry solved 19 17 in the following way. "I know 2 and 18 is 20. Then I added another 10 to get 30. Then I added the other 5 and got 35." Explain mathematically (e.g., use relevant properties) why Larry's process is correct or incorrect.There are 14 flowers in the flower bed. 8 are orange. The rest are white. How many flowers are white?
