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102 ÷ 3 = 34
32
15
To determine how many times 8 can go into 81, we divide 81 by 8. The result is 10 with a remainder of 1. Therefore, 8 can go into 81 a total of 10 times with a remainder of 1.
81/7 = 11 4/7
37.6666667
20
1,000 x 3 = 3,000
102 ÷ 3 = 34
1 goes into 81 81 times.
32
15
81 ÷ 9 = 9
75 ÷ 3 = 25
28 3s
81/7 = 11 4/7
The factors of 64 are all 2s and the factors of 81 are all 3s. The greatest common factor is 1, since they have no factors in common. ■