= 4567 + 1234 – 4567 – 4

= (4567 – 4567) + (1234 – 4)

= 0 + 1230

= 1230

b.2001 – (53 + 1579) – (-53)

= 2001 – 53 – 1579 + 53

= (2001 – 1579­) + [(-53) + 53]

= 422 + 0

= 422
c.35 – 17 + 2017 – 35 + (-2017)

= 35 – 17 + 2017 – 35 – 2017

= (35 – 35) + (2017 – 2017) – 17

= 0 + 0 – 17

= -17
d.37 + (-17) – 37 + 77

= 37 – 17 – 37 + 77

= (37 – 37) + [(-17) + 77]

= 0 + 60

= 60  
e.–(-219) + (-219) – 401 + 12

= 219 – 219 – 401 + 12

= (219 – 219) + [(-401) + 12]

= 0 + (-389)

= - 389
f.|-85| - (-3).15

= 85 + 3 . 15

= 85 + 45

= 130
g.11.107 + 11.18 – 25.11

= 11 . ( 107 + 18 – 25)

= 11 . ( 125 – 25)

= 11 . 100

= 1100
h.115 – (-85) + 53 – (-500 + 53)

= 115 + 85 + 53 + 500 – 53

= (115+ 85) + (53 – 53) + 500

= 200 + 0 + 500

= 700
k.(-18) + (-31) + 98 + |-18| + (-69)

= - 18 – 31 + 98 + 18 – 69

= [(-18) + 18] + [(-31) + (-69)] + 98

= 0 + (-100) + 98

= -100 + 98

= -2
l.17. (15 – 16) + 16.(17 – 20)

= 17 . 15 – 16 + 16 . 17 – 20

= 17 . (15 – 20) + [(-16) + 16]

= 17 . (-5) + 0

= -85
m.15.(-176) + 15.76 + 100.15

= 15 . [(-176) + 76 + 100]

= 15 . [-100 + 100]

= 15 . 0

= 0
n.79.89 – 79.(-11) – 100.79

= 79 . [89 – (-11) – 100]

= 79 . [89 + 11 – 100]

= 79 . [100 – 100]

= 79 . 0

= 0
o.153.177 – 153.77 + 100.(-77)

= 153 . ( 177 – 77) + 100 . (-77)

= 153 . 100 + 100 . -77

= 100 . (153 – 77)

= 100 . 76

= 7600
p.-69.|-45| - 31.|45|

= - 69 . 45 – 31 . 45

= 45 . [-(69 + 31)]

= 45 . 100

= 4500
q.q. (-29).(85 – 47) – 85.(47 – 29)

=-29.85+29.47 - 85.47+85.29

=(-29.85+85.29)+(29.47 - 85.47)

=0+47.(29 - 85)

=47.(-56)

=-2632.
.r. (-167).(67 – 34) – 67.(34 – 167)
(−167):(67−34)−67×(34−167)(−167):(67−34)−67×(34−167)

=(−167):33−67×(−133)=(−167):33−67×(−133)

=−167/ 33+8911=−16733+8911

=293896/ 33