312/2 = 156 so 156 x 2 = 312 Simple...
nothing
11x11
8x6
12 squared.
it is a prime number
1*98
6x7=42
1x930=930
Some thing
Numbers in a multiplication problem aren't added. In a multiplication sentence, the multiplicand times the multiplier equals the product.
If you can answer it, then it is not that hard!