To check the answer to the multiplication problem, Noah would want to verify that the total amount of water needed is 98 ounces, which is calculated by multiplying 7 plants by 14 ounces of water each (7 × 14 = 98).
The addition equation that corresponds to adding 14 ounces for each of the 7 plants is:
14 + 14 + 14 + 14 + 14 + 14 + 14 = 98
This shows that he is adding the 14 ounces for each of the 7 plants. Therefore, the correct equation to check his answer is:
14 + 14 + 14 + 14 + 14 + 14 + 14 = 98.