Answer:
6. you can round 287 to the nearest 10 which will be 290 so 290 times 3 equals 870
7. round 1,310 to the nearest 100th which is 1,300 so 1,300 times 6 equals 7,800
8. round 62 to the nearest 10th which equals 60 then 60 times 9 equals 540
Step-by-step explanation:
9. round 486 to the nearest 10th which is 490 so 490 times 7 equals 3430 then mark unreasonable
10. round 1,240 to the nearest 100 which will be 1,200 so then 1,200 times 5 equals 6,000 then mark unreasonable
11. round 287 to the nearest tenth which is 290 so then 290 times 5 equals 2610
