a) 23 . 17 - 23 . 14
= 23(17-14)
=23. 3= 24
b) 80 - ( 4 . 5 - 3 . 23 )
= 80- 22. (5-3.2)= 80- 22.(-1)
= 80- 4.(-1)= 80- (-4)= 84
c) 35 - { 12 - [ -14 + ( -2) }
= 35 - { 12 - (-16) }
=35- 28= 7
d) 49 - ( -45) - 23
= 94-23= 71
e) 13 - 18 - ( -42) - 15
= -5 -(-42) -15
= -20+42= 22
g) -452 - ( -67 + 75 - 452 )
= -452- (8-452)
= -452 -(- 444)= -8
h) |31−17|−|13−52|
= 14- 39= -25
a)23.17-23.14=23(17-14)=23.3=8.3=24
b)80-(4.5-3.23)=80-(20-3.8)=80+20+24=124
c) 35-{12-[-14+(-2)]}=35-12+14+-2=35
d) 49-(-45)-23=49+45-23=71
e)13-18--42-15=13-18+42-15=22
g)-452-(-67+75-452)=-452+67-75+452=67-75=-8
h)|31-17|-|13-52|=14-39=-25
a, 23.17-23.14
=23.(17-14)
=8.3
=24
b, 80-(4.5-3.23)
=80-(20-24)
=84
c) 35 - { 12 - [ -14 + ( -2) }
=35-{ 12 -(-16) }
=35-28
=307
d,49-(-45)-23
= 94-23
=71
e,13-18-(-42)-15
=22
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