7*9 = 9*(10 - 3) = 90 - 27 = 63
Multiplication can be the first step when using the distributive property with subtraction. The distributive law of multiplication over subtraction is that the difference of the subtraction problem and then multiply, or multiply each individual products and then find the difference.
The distributive property is not used for simplified multiplication. See http://www.algebrahelp.com/lessons/simplifying/distribution for information about how to use the distributive property to simplify other equations. 20 x 12 is already simplified, so the proper way to solve it is 12 x20 ----- 240 You could potentially factor and use the commutative property to find a simpler equation, ex. 20x12 -- break 20 into 10 and 2 10x2x12 -- multiply 2 by 12 10x24 -- multiply by 10 240
commutative property 9X3
you would go: (30x9) + (7x9) = 270 + 63 = 333 which is the same as if you typed 37x9 into the calculator and got 333!
distributive.
distributive
7*9 = 9*(10 - 3) = 90 - 27 = 63
(7 x 60) + (7 x 5) = 420 + 35 = 455
You don't need to use the distributive property. 3*17 = 51 so 30*17 = 510 Why invoke procedures that are not necessary?
7*46 = 7*(40 + 6) = 7*40 + 7*6 = 280 + 42 = 322
Some people use the distributive property to add 24 and 36, but you wouldn't use it to find the GCF which, by the way, is 12.
6 x 4.3 = 6 x 4 + 6 x 0.3 = 24 + 1.8 = 25.8
OWO
Assuming the operation is multiplication, 597 * 4 = (600 - 3)*4 = 600*4 - 3*4 = 2400 - 12 = 2388
(8x40)+(8x5)
(7 x 10) + (7 x 4) + (7 x 0.6) = 70 + 28 + 4.2 = 102.2