CPhill

NO!!!

Example:   -8 + (-5)  = -13

But     -8 - (-5)  = -8 + 5  = -3

In this case, the difference is greater!!!

10,200 x 77,000,000  = $ 785400000000    (about 785 billion dollars)

11 + 2/5   =  11.40   or just 11.4

(2wx2)(8w3 z4) =

(2 * 8) *(w * w³) * (x²) * (z⁴)  =

16w⁴x²z⁴

Mmmm...let's look at this, again

15r = 1/3       multilpy both sides by 1/15

r  = (1/3)(1/15)  = 1/45

16 - 22 - l3 - 9l =

-6 - l-6 l  =

-6 - (6)  =

-12

Here's an "exact" answer

4*sqrt(384) = 4*sqrt(2^7 * 3)  = 4*sqrt(2^7)*sqrt(3)  = 4*2^3sqrt(2)*sqrt(3)  = 32*sqrt(6)

60 * (1 - .1429)   = 51.426 hrs

Thanks, blondie, for that excellent answer......I should add that "natural" numbers are usually considered "counting" numbers.....1,2,3, 4, etc.  

[Some people also include 0 ]

sqrt(45)  = sqrt (9 * 5)  = sqrt(9) * sqrt (5)   =  3*sqrt(5)