There are 9 threes in 28... with a remainder of 1 !
210
35
22
100 of them
33.3333333 3's go into 100
100
There are ten threes in 30, and 27 is three less than that So there are 9 threes in 27 multiply both by to there are 90 threes in 270
13
27 threes are in 81
43 ÷ 3 = 14 with remainder 1
There are: 91/3 = 30 with a remainder of 1