8.5
Oh, dude, you're totally right! So, like, on a number line, 8.9 falls between 7 and 8 because, like, it's closer to 8 than it is to 7. It's like, if you were walking from 7 to 8, you'd pass 8.9 on the way. So, yeah, 8.9 is totally chilling between 7 and 8 on that number line.
8
There is an infinite amount of numbers between 0 and 1 on the number line.
Halfway between 8 and 9
14
8
If we are talking whole numbers, then 9 is between 8 and 10. But if you have a number line measure in tenths (decimals), then 9 is between 8.9 and 9.1. If the number line is in halves, then 9 coms in between 8 and a half and 9 and a half. There are lots of answers. It just depends on the scale of the number line.
8.
3
The number would be 7.9 on a number line. What you can do to find this number is go to the spot on the number line that says 7 and 8. Cut the number line between 7 and 8 into 10 pieces. Then count to the ninth peice and this is 7.9
On a number line, 8.79 would be 79/100th of the way between 8 and 9 past 8.
8: 1,2,3,5,7,13,17,19