The factor pairs for 20 are: 1 x 20 2 x 10 4 x 5
12, 16 or 18
The factor pairs of 91 are (1,91) and (7,13).
30 has four factor pairs:30,115,210,36,5
The factor pairs are the length and width of the rectangles.
20 has 3 factor pairs. Pairs are (1,20), (2,10) and (9,9)
The factor pairs of 20 are: 20,1 / 10,2 / 5,4
(3,11)
(36,1)(18,2)(12,3)(9,4)(6,6)
2&8 4&4 16&1
There are 3 factor pairs of 20: 1 x 20, 2 x 10 and 4 x 5.
There are 3 factor pairs of 20:20 = 1 x 2020 = 2 x 1020 = 4 x 5
Factor pairs are just the factors of a number listed in a different way. The factors of 20 are 1, 2, 4, 5, 10, 20 The factor pairs of 20 are (20,1)(10,2)(5,4)
The difference is between factor pairs and distinct factors. With square numbers, one of the factor pairs will be the same number twice. When listing the distinct factors, that number is only listed once.
12 and 18 have three factor pairs.
12 and 18 have three factor pairs.
Since one dollar is one hundred pennies, the multiplication sentences for 100 would be the same in both cases.