Answer:
?
Step-by-step explanation:
If you meant write the numbers that round to 400 it would be
351-399 and 401-449
Answer:
349 would round down to 300
350 would round up to 400
449 would round down to 400
450 would round up to 500
the whole numbers that round to 400 are all numbers between 350 and 449 inclusive. That is 449 - 349 = 100 numbers.
