100 = 1 x 100
100 = 2 x 50
100 = 4 x 25
100 = 5 x 20
100 = 10 x 10
All of the composite numbers less than 100 have factor pairs.
80 has 5 factor pairs.
(100,1)(50,2)(25,4)(20,5)(10,10)
1 and 500, 2 and 250, 4 and 125, 5 and 100, 10 and 50, 20 and 25, a total of 6 factor pairs.
80 has 5 factor pairs.
60, 72, 84, 90 and 96 have 6 factor pairs.
(1,100) (10,10)
1x40, 2x20, 4x10, 5x8 are all the factor pairs of 40.
The factor pairs of 20 are: 20,1 / 10,2 / 5,4
100 and 7
Since one dollar is one hundred pennies, the multiplication sentences for 100 would be the same in both cases.
The factor pairs for 38 are (1, 19) and (2, 38).