Answer:
1000
Step-by-step explanation:
604 is close to 600.
392 is close to 400.
600 + 400 = 1000
Answer: 1000
1,000
Estimate means to round and sum means addition
604 rounds to 600
392 rounds to 400
600 + 400 = 1,000
I hope this helps! have a wonderful rest of ur day :)
