How many fives go into 90?

Answer 1

Lets count.

1. 5
2. 10
3. 15
4. 20
5. 25
6. 30
7. 35
8. 40
9. 45
10. 50
11. 55
12. 60
13. 65
14. 70
15. 75
16. 80
17. 85
18. 90

So we can see there are 18 - 5's in 90.