90
9+90=99 (90 is ten times as much as 9)
270 once 27 10 times 10 27 times 90 3 times etc
4 times with a remainder of 10 or 4.5 times
1,000 divided by 90 equals 11 with a remainder of 10.
10 * 90 = 900
90 divided by 10 is 9, so 10 goes into 90 9 times.
99
"9 times 10" or 9 multiplied by 10 is 90.
900 is ten times larger than 90
90 divided by 25 is 3 with remainder 15
10 percent of 90 is 9 so 30 percent will be 9 times 3 which is 27