need help this is my nieces work its. a 3rd grade work

answer: 1,000
explanation:
741 would be rounded to 700
176 would be rounded to 200
add it all together add it would be 1,000
if the next number of the number your looking at is lower then 5 it's unchanged. if it's more then 5, then it changes to the next number
hope this helps you and your nieces! ❤from peachimin
Answer: 900
Step-by-step explanation:4 or less let it rest
5 or more let it shore its a 741 so its 700 and 176 is 200
700 + 200 = 900