Question

a) 100 – 3 x { 5 + 8 : 2 - [ 3 x ( 7 – 6 ) ] } = *
b) 25 + [ 7 + ( 8 - 4 : 2 ) ] = *
c) 1000 - [ ( 2 x 4 + 6) + ( 2 + 6 x 4) ]= *
d) 80 - [ 22 + ( 5 x 2 - 1 ) + 6 ] = *
e) [ 30 + 2 x ( 5 – 3 ) ] x 2 – 10 = *
f) 14 : 2 + [ 13 - ( 4 x 2 + 1 ) ] = *
g) 80 - 5 x ( 28 - 6 x 4 ) + 6 - 3 x 4 = *
h) [ ( 4 + 16 : 2 ) x 5 – 10 ] : 10 = *
i) 60 + 2 x { [ 4 x ( 6 + 2 )- 10 ]+ 12 } = *
j) { 10 + [ 5 x ( 4 + 2 x 5) – 8 ] x 2 } – 100 = *

Answer 1

a) 100 – 3 x { 5 + 8 : 2 - [ 3 x ( 7 – 6 ) ] } =

100 – 3 x { 5 + 4 - [ 3 x  1 ) ] }

100 – 3 x { 9 -  3  }

100 – 3 x  6

100 – 18

82

--------------/-------------------------------/--------------

b) 25 + [ 7 + ( 8 - 4 : 2 ) ] =

25 + [ 7 + ( 8 - 2 ) ]

25 + [ 7 + 4  ]

25 + 11  

36

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c) 1000 - [ ( 2 x 4 + 6) + ( 2 + 6 x 4) ]=

1000 - [ (8 + 6) + ( 2 + 24) ]

1000 - [ (14) + ( 26) ]

1000 - 40

960

--------------/-------------------------------/--------------

d) 80 - [ 22 + ( 5 x 2 - 1 ) + 6 ] =

80 - [ 22 + ( 10 - 1 ) + 6 ]

80 - [ 22 + 9 + 6 ]

80 - 37

43

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e) [ 30 + 2 x ( 5 – 3 ) ] x 2 – 10 =

[ 30 + 2 x 2  ] x 2 – 10

[ 30 + 4  ] x 2 – 10

30 x 2 – 10

60 – 10

50

--------------/-------------------------------/--------------

f) 14 : 2 + [ 13 - ( 4 x 2 + 1 ) ] =

7 + [ 13 - ( 8 + 1 ) ]

7 + [ 13 - 9 ]

7 + 4

11

--------------/-------------------------------/--------------

g) 80 - 5 x ( 28 - 6 x 4 ) + 6 - 3 x 4 =

80 - 5 x ( 28 - 24 ) + 6 - 12

80 - 5 x 2 + 6 - 12

80 - 10 + 6 - 12

64

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h) [ ( 4 + 16 : 2 ) x 5 – 10 ] : 10 =

[ ( 4 + 8 ) x 5 – 10 ] : 10

[ 12 x 5 – 10 ] : 10

[ 60 – 10 ] : 10

50 : 10

60

--------------/-------------------------------/--------------

i) 60 + 2 x { [ 4 x ( 6 + 2 )- 10 ]+ 12 } =

60 + 2 x { [ 4 x 8 - 10 ]+ 12 }

60 + 2 x { [ 32 - 10 ]+ 12 }

60 + 2 x { 22 + 12 }

60 + 2 x 34

60 + 68

128

--------------/-------------------------------/--------------

j) { 10 + [ 5 x ( 4 + 2 x 5) – 8 ] x 2 } – 100 =

{ 10 + [ 5 x ( 4 + 10) – 8 ] x 2 } – 100

{ 10 + [ 70 – 8 ] x 2 } – 100

{ 10 + 62 x 2 } – 100

{ 10 + 124 } – 100

134 – 100

34