NetScape 3.0+ or I.E. 4.0+ needed
Suggestions for this self exam:
[A] Study text section 4.3 , but then keep your book closed during this entire test
[B] Enter your answers in the boxes provided. Check them when you've finished.
[C]
 Remember the general rules: ab = acbc and also ad + bd = a + bd
[D] The LCD ("least common denominator": "d" in the paragraph above), is the smallest number which is a multiple of all denominators in a sum. Typically, we find the LCD by factoring all denominators into prime (unfactorable) expressions. The LCD then includes any prime expression as a factor, and includes it as many times as that denominator which contains it most abundantly.

 Thus, for 1312 + 1118 = 13  (22)(3) + 11  (2)(32) , the LCD is (22)(32) = 36.

 Hence: 1312 + 1118 = (13)(3)(12)(3) + (11)(2)(18)(2) = (13)(3)+ (11)(2)36 = 6136

[1] Enter the correct numerator and denominator of the reduced sum:
 1748 + 1340 =

[2] Enter the correct numerator and denominator of the reduced difference:
 116 - 3  10 =

[3] Enter the correct numerator and denominator of the reduced difference:
 116x - 3  10y =

[4] First determine the LCD for the fractions to be added below. Then, in the answer box, enter the numerator of the correct reduced sum:
 6 - x  x2 - 25 + 3   x + 5 = LCD

[5] First determine the LCD for the fractions to be subtracted below. Then, in the answer box, enter the numerator of the correct reduced difference:
 (x + 1)2x3 - 1 - x + 1x2 + x + 1 = LCD

[6] First determine the LCD for the fractions to be added and subtracted below. Then, in the answer box, enter the numerator of the correct reduced sum (right side):
 x2 +5x + 6x2 - 9 - 2x - 3x + 3 + x + 1x - 3 = LCD

[7] First determine the LCD for the fractions to be added below. Then, in the answer box, enter the numerator of the correct reduced sum:
 2x2 + 3x - 38x3 + 27 + 2 - x24x3 - 6x2 + 9x = LCD

[8] First determine the LCD for the fractions to be subtracted below. Then, in the answer box, enter the numerator of the correct reduced difference:
x + 1

x2 + ax - 3x - 3a
-  x - 3

x2 + ax + x + a
=

LCD

[9] First determine the LCD for the fractions to be added below. Then, in the answer box, enter the numerator of the correct reduced sum:
 x + 3x2 + 3x + 2 + 1 - xx2 - 4 = LCD

[10] First determine the LCD for the fractions to be subtracted below. Then, in the answer box, enter the numerator of the correct reduced difference:
 x + 1x2 - x - 6 - x - 6x2 - 8x + 15 = LCD

[11] First determine the LCD for the fractions to be added below. Then, in the answer box, enter the numerator of the correct reduced sum:
 6 - x2x4 - 16 + 1x2 + 4 = LCD