Answer:

1.) 6,873 will be 6,900

2.) 83, 974 will be 83, 970

Step-by-step explanation:

1.) The number in the hundreths place in the number 6873 is 8 and the number beside it to the right is 7 which is more than 5 so we need to add 1 to the number in the hundreths place which is 8 which will become 9 and replace the remaining digits by 0.

2. 83974 the tenth place is 7 and the number beside it to the right is 4 which is less than 5 so the tenth place which is 7 will remain as 7 and the 4 will be replaced by 0