Think about it....
there are 2 sticks: | |
you multiply by 2(basically adding 2 more) | | x | | =
Same with addition
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because two plus two plus two is four and two times two is just he same thing but in multiplication.
It is the same as: 2 times 3965 = 7930
Addition is the same no matter what order it is in. If x is 2, then 2+3=5 and 3+2=5 are the same. They are all in the same fact family. Multiplication is the same no matter what order it is in as well. x times 3 is the same as 3 times x If x is 2, then 2*3=6 and 3*2=6 Fact families!
actually it equals -4 because when two signs are not same they give a negative product. If they are the same, then the product is positive. so 2 times -2 is -4
2 times a number minus 17 plus 20 times a number minus 9 is the same as 2x - 17 + 20x - 9 = 22x - 26