Help with this math question and this english for a 5th grader.?

Question

Estimate the difference to the nearest whole number.
17.846-3.05
Use a conjunction to combine sentences to form one sentence with a compound predicate. Underline each simple predicate in the compound predicate.
The Romans conquered the Etruscans. The Romans learned about architecture from them.

Answer 1

15

The Romans "conquered the Etruscans" and "learned about architecture from them."

I put quotes around the simple predicates because I do not have the means to underline them.

Answer 2

int(17.846 - 3.05 ) = 15