(100,1)(50,2)(25,4)(20,5)(10,10)
All of the composite numbers less than 100 have factor pairs.
1 and 500, 2 and 250, 4 and 125, 5 and 100, 10 and 50, 20 and 25, a total of 6 factor pairs.
Every whole number between 1 and 50 is a factor of one or more whole numbersbetween 1 and 100.' 1 ' is a factor of every whole number.
1x40, 2x20, 4x10, 5x8 are all the factor pairs of 40.
The factor pairs for 38 are (1, 19) and (2, 38).
The factor pairs of 26 are: 1 × 26 2 × 13
The factor pairs of 20 are pairs of numbers that can be multiplied together to give 20. The factor pairs of 20 are (1, 20), (2, 10), and (4, 5). These pairs represent all the possible combinations of numbers that can be multiplied to equal 20.
100 = 1 x 100 100 = 2 x 50 100 = 4 x 25 100 = 5 x 20 100 = 10 x 10
They are:165,155,333,515,11
1,81,3,27,9
They are:200,1100,250,440,525,820,10
51,117,3