Question

Bài 2 (1,0 điểm) Thực hiện phép tính:

a) $76.12 + 24.12 - 200$;

b) $3^4.36 + 4^3.81 - 100 $.

Answer 1

a)  76.12 + 24.12 - 200

= 12.(76+24)-200

= 12.100 -200

= 1200-200 = 1000

b) 3^4 . 36 + 4^3 . 81 -100

= 81.36 + 64.81 -100

= 81.(36+64)-100

=81.100-100

=8100-100 = 8000

Answer 2

a)  76.12 + 24.12 - 200

= 12.( 76+24 ) - 200

= 12.100 - 200

= 1200 - 200 = 1000

b) 3^4 . 36 + 4^3 . 81 - 100

= 81.36 + 64.81 - 100

= 81.(36+64) - 100

=81.100 - 100

=8100 - 100 = 8000

Học tốt!

Answer 3

a)

=12 . (76+24)-200

=12 . 100 - 200

=1200 - 200 

=1000

b)

=3⁴.3².4 + 4³. 3⁴ - 100

=3¹⁰+4⁴ -100

=59049+256-100

=59305-100

=59205

Answer 4

A)1000

B)8000

Answer 5

a) 76.12+24.12-200

= 1002 + 288 -200

= 1290 - 200

=1009

b) 3⁴.36+4³.81-100

=27.36+64.81 - 100

=972+ 5184-100

=6156-100

=6056

Answer 6

a)  12.(76+24)-200=12.100-200

                              =1200-200

                              =1000

b)81.36+64.81-100 = 81.(36+64)-100

                               =81.100-100

                               =8100-100

                               =8000

76.12+24.12−

Answer 7

a) 76 * 12 + 24 * 12 - 200

= ( 76 + 24 ) *12 - 200

= 100 * 12 - 200

= 1 200 - 200 

= 1 000

b) 3⁴ * 36 + 4³ * 81 - 100

= 81 * 36 + 64 * 81 - 100

= 81 * ( 36 + 64 ) - 100

= 81 * 100 - 100 

= 8 100 - 100 

= 8 000

Answer 8

a) 76 * 12 + 24 * 12 - 200

= ( 76 + 24 ) *12 - 200

= 100 * 12 - 200

= 1 200 - 200 

= 1 000

b) 3⁴ * 36 + 4³ * 81 - 100

= 81 * 36 + 64 * 81 - 100

= 81 * ( 36 + 64 ) - 100

= 81 * 100 - 100 

= 8 100 - 100 

= 8 000

Answer 9

a, 76.12 + 24.12 - 200

= 12.( 76 + 24 ) - 200

=12.100 - 200

=12 000 - 200

= 11 800

b, 3⁴.36 + 4³.81 - 100

= 81.36 + 64.81 - 100

=81.(36 + 64) - 100

=81.100 - 100

=81 00 -100

=81

Answer 10

a) 76.12 + 24.12 - 200 = 

= 12. (76 + 24) - 200

= 12.100 - 200

= 1200 - 200

= 1000

b) 3⁴.36 + 4³.81 - 100 =

= 81.36 + 64.81 - 100

= 81. (36 + 64) - 100

= 81. 100 - 100

= 8100 - 100

= 8000

Answer 11

a) 76 . 12 + 24 . 12 - 200 = 12 . ( 76 + 24 ) - 200 = 12 . 100 - 200 = 1200 - 200 = 1000

b)34. 36 + 43 . 81 − 100 = 81 . 36 + 64 . 81 - 100 = 81 . ( 36 + 64 ) - 100 = 81 . 100 - 100 = 8100 - 100 = 8000

Answer 12

a) 76 . 12 + 24 .12 - 200

= 12 . (76 + 24) - 200

=12 . 100 - 200

=1200 - 200

=1000

b) 3⁴ . 36 + 4³ . 81 - 100

= 81 . 36 + 64 . 81 - 100

= 81 . (36 + 64) - 100

= 81 . 100 - 100

=8100 - 100

=8000

Answer 13

a) 76.12+24.12-200

=12(76+24)-200

=12.100-200

=1200-200

=1000

b)3⁴.36+4³.81-100

=81.36+64.81-100

=81(36+64)-100

=81.100-100

=100(81-1)

=100.80

=8000

Answer 14

a)

=12 x (76 + 24) - 200

= 12 x 100 - 200

= 1200 - 200

= 1000

b)

= 81 x 36 + 64 x 81 - 100

= 81 x (36 + 64) - 100

= 81 x 100 - 100

= 8100

Answer 15

a) 76 . 12 + 24 .12 - 200

= 12 . (76 + 24) - 200

= 12 . 100 - 200

= 1 200 - 200

= 1 000

b) 3⁴ . 36 + 4³ . 81 - 100

= 81 . 36 + 64 . 81 - 100

= 81 . (36 + 64) - 100

= 81 . 100 - 100

= 8 100 - 100

= 8 000

Answer 16

a) 1000

b) 8000

Answer 17

a,76.12+24.12-200

=12.(76+24)-200

=12.100-200

=1200-200

=1000.

b,3⁴.36+ 4³.81-100

3⁴.36+64.3⁴-100

=3⁴.(36+64)-100

=3⁴.100-100

=81.100-100

=8100-100

=8000

 

Answer 18

a) ( 76 + 24 ).12 - 200 

= 100 .12 - 200

= 1200 - 200

= 1000

b) 81 . 36 + 64. 81 - 100

= ( 36 + 64 ) . 81 - 100

= 100 . 81 - 100

= 8100 - 100

= 8000

Answer 19

A=1000,b=8000

Answer 20

a) 76.12+24.12-200

=12.(76+24)-200

=12.100-200

=1200-200

=1000

b)3⁴.36+4³.81-100

=81.36+64.81-100

=81.(36+64)-100

=81.100-100

=8100-100

=8000

Answer 21

a) $76.12+24.12-200$;

=(76+24).12-200

=100.12-200

=1200-200

=1000

Answer 22

a). 76.12 + 24.12 -200.     
     =912 +  288 -200.   
     =. 1200-200.     
     = 1000.         
b)3^4 . 36 + 4^3 . 81 - 100.       
   = 81.36+64.81-100.        
   = 2916 + 5184 -100.    
   = 8100-100.       
   = 8000

Answer 23

a) 76.12+24.12-200

=12.(76+24)-200

=12.100-200

=1200-200

=1000

b)3⁴.36+4³.81-100

=81.36+64.81-100

=81.(36+64)-100

=81.100-100

=8100-100

=8000

Answer 24

a, 12. (76+ 24) - 200 = 12. 100 - 200= 1200-200= 1000

b, 3⁴.36 + 4³.3⁴- 100 = 3⁴.( 36+64) - 100 = 81. 100 - 100 = 8100 - 100 = 8000.

Answer 25

a) $76.12+24.12-200$

$=12.(76+24)-200$

$=12.100-200$

$=1200-200=1000$.

b) 34.36+43.81−10034.36+43.81−100

$=81.36+64.81-100$

$=81.(36+64)-100$

$=81.100-100$

$=8100-100=8000$.

Answer 26

a.76.12+24.12-200=12.(76+24) - 200 =12.100 - 200=1200 - 200 = 1000

b.3⁴.36+4³.81-100=3⁴.36 + 4³. 3⁴ - 100= 3⁴.(36 + 64) -100 =

= 81. 100 - 100 = 8100 - 100 = 8000

Answer 27

a)=12.(76+24-200)

=12. 100-200

=1200-200

=1000

b)=81. 36+64. 81-100

=81.(36+64-100)

=81. 100-100

=8100-100

=8000

Answer 28

a) $76.12+24.12-200$

$=12.(76+24)-200$

$=12.100-200$

$=1200-200=1000$.

b) 34.36+43.81−10034.36+43.81−100

$=81.36+64.81-100$

$=81.(36+64)-100$

$=81.100-100$

$=8100-100=8000$.

Answer 29

a,76.12 + 24.12 - 200

= 12.(76+24)-200

= 12.100 -200

= 1200-200 = 1000

b) 3^4 . 36 + 4^3 . 81 -100

= 81.36 + 64.81 -100

= 81.(36+64)-100

=81.100-100

=8100-100 = 8000

Answer 30

a)   = 12 .  (76+ 24)- 200

     =   12 .  100 - 200

    =    1200 -  200

     =     1000

b)  =   81 . 36 + 64 . 81 -  100

     =    81 .  (36 .  64 )   -  100

      =   81.  100 -100 

       =    8100-  100

         =      8000