4 Nathaniel answered the following subtraction problem incorrectly. 16.43 – 1.043 = 6.00

Fill in the blanks to describe Nathaniel's error, and how he could have known that
his difference was incorrect.
When trying to solve this problem, Nathaniel did not line up the decimals according to
Nathaniel could have estimated to see that his answer was incorrect.
He could have subtracted the whole number
from the whole number
to see that his difference should have been about