Simplify and express in exponential form.
a. `23^(207)-:23^(158)`
b. `(-19)^(105)-:19^(28)`
c. `(-8)^(134)-:(-8)^(98)`
d. `43^(222)-:43^(122)`
e. `(57)^(234)-:(-57)^(179)`
f. `(-a)^(83)-:(-a)^(67)`

Simplify and write in exponential form. a. 5^(89)xx5^(54) b. (-9)^(157)xx9^(23) c. (-7)^(13)xx(-7)^(33) d. 6^(125)xx6^(88) e. (-12)^(255)xx12^(45) f. (-4)^(66)xx(-4)^(44)

Express the following product in exponential form. a. (-5)^(14)xx(-7)^(14) b. (a)^(19)xx(-b)^(19) c. (3)^(21)xx5^(21) d. (6)^(9)xx(5)^(9) e. (x)^(13)xx(-y)^(13) f. (-7)^(32)xx(-9)^(32)

Simplify and write the answer in exponential form. a. (4^(3)xx10^(5))/(2^(3)xx5^(4)) b. ((6^(4))^(4)xx5^(8)xxa^(6))/(9^(9)xx10^(6)) c. (15^(32)xx12^(15)xx54^(4))/(25^(12)xx18^(8)xx9^(2)) d. (8^(4)xx6^(4))/(2^(8)xx3^(3)) e. (8^(12)xx(9^(2))^(5)xx5^(6))/(6^(9)xx15^(4)) f. (21^(16)xx70^(8)xx36^(15))/(49^(4)xx15^(5)xx24^(6))

Express the following as mixed fractions : (a) (20)/(13) (b) (11)/5 (c) (17)/7 (d) (28)/5 (e) (19)/6 (f) (35)/9

Find the difference of the following : {:(a.,23 - (7),b.,54 - (32),c.,83 - (-71)),(d.,43 - (-89),e.,39 - (-72),f.,(-89) - (-12)),(g.,(-81) - (50),h.,(-32) - (-13),,):}

Find the product, using suitable properties: (a) 26 xx (-48) + (-48) xx (-36) (b) 8 xx 53 xx (-125) (c) 15 xx (-25) xx (-4) xx (-10) (d) (-41) xx 102 (e) 625 xx (-35) + (-265) xx 65 (f) 7 xx (50-2) (g) (-17) xx (-29) (h) (-57) xx (-19) + 57

23. bar 43 when expressed in the form p/q(p ,\ q are integers q\ !=0) , is 2320/(99) (b) 2343/(100) (c) 2343/(1999) (d) 2320/(999)

Write as percentages. a. (3)/(20) b. (7)/(8) c. (4)/(25) d. (2)/(125) e. 0.05 f. 0.003 g. 0.73 h. 2.3 i. 3:20 j. 9:8 k. 101:100 l 5:8

Use the sign of lt, gt or = in the box to make the statement true(a) (-8)+(-4) __ (-8)-(-4) (b) (-3)+7-(19) ___ 15-8+(-9) (c) 23-41+11 ___ 23-41-11 (d ) 39+(-24)-(15) ____ 36+(-52)-(-36) (e) -231+79+51 ___ -399+159+81

Evaluate : a. 721 - 567 + 382 - (345 - 487) b. 823 - 535 + 489 - (521 - 278) c. 4 + 12 + (-7) + (-8) d. (-23) + 19 + (-13) + 6 e. 4567 + (-6234) + (76) + (-345) + 74 f. |8 - 10| g. |-15 + 9| h. |20 - 23| i. |-30 + 16| j. |3 - (9 - 1)| k. |21 - (39 - 11)|