Question

g)18 . (-24) + 35 . 42 -18 . 76 + 35 . (-142)

h) 104 : (-13) - [ 56 - 220 : ( -4 )] 

i)1010: {2500:[ 550 - (4 . 53 - 23 . 25) ]}

j) (7² + 3² . 4² )+(-145 ) + 45 -2023⁰ + 1²⁰²³ 

 

Answer 1

a, 18.(-24) +  35.42 - 18.76  + 35.(-142)

=  [ 18.(-24) - 18.76] + (35.42 + 35(-142)]

= -18.[ 24 + 76]  - 35.( 142 - 42)

= -18.100  - 35. 100

= - 100.(18 + 35)

= - 100. 53

= - 5300

Answer 2

h,   104 : (-13) - [56 - 220 : (-4)]

  = 104 : (-13)  - [ 56 + 55]

= -8 - 111

= - 119 

Answer 3

j; 1010 : {2500 : [550 - (4.53 - 23.25)]}

 = 1010 : {2500 : [550 - (212 - 575)]}

= 1010 : {2500 : [550 + 363]

= 1010 : { 2500 : 913}

= 1010 : \(\dfrac{2500}{913}\)

= 1010 x \(\dfrac{913}{2500}\)

= 368,852

Answer 4

j) (7² + 3².4²) + (-145) + 45 - 2023⁰ + 1²⁰²³

= (49 + 9.16) + (-145) + 45 - 1 + 1

= (49 + 144) + (-145) + 45 - 1 + 1

= 193 + (-100) - 1 + 1

= 93 - 1 + 1

= 93

 

Answer 5

j; (7² + 3².4²) + (-145) + 45 - 2023⁰ + 1²⁰²³

=  (49 + 9.16) - 145 + 45 - 1 + 1

= 49 + 144 - 145 + 45 - 1 + 1

= (49 + 1) + (144 - 145) + (45 - 1)

= 50 -  1 + 44

= 49 + 44 

= 93