Using multiplication 40 times 45 = 1800
None
The multiplication facts to equal 84 are:1x84 2x42 7x12 (flip) 1x84 2x42 7x12
1 x 21 3 x 7 7 x 3 21 x 1
How about: 5*9 = 45 as one example
30x1 15x2 10x3
10*4=40
1 times 4
-2 x 3
1*114 = 114 is one such fact.
1 x 25, 5 x 5.
There are infinitely many facts. Some of these are: 1 * 10 100 * 0.2 50 * 0.4