Exactly 9 of them
630
10 times
There are: 495/9 = 55
Write the repeating digits over the same number of 9s and simplify: 0.81... has two repeating digits ⇒ the denominator has two 9s, ie 99. ⇒ 0.81... = 81/99 = 9/11
as in the multiples? 9 18 27 36 45 54 63 72 81 90 99 ...
1 goes into 81 81 times.
Nine of them
10 times
9*9=81 81-9=72 72/9=88
There are: 495/9 = 55
90 / 9 = 10
6 of them with a remainder of 4
70 x 9 = 630
Write the repeating digits over the same number of 9s and simplify: 0.81... has two repeating digits ⇒ the denominator has two 9s, ie 99. ⇒ 0.81... = 81/99 = 9/11
3 times with a remainder of 5
33 divided by 9 equals 3 with a remainder of 6
as in the multiples? 9 18 27 36 45 54 63 72 81 90 99 ...
1 goes into 81 81 times.