Question

Thực hiện phép tính :

15 x 141 + 59 x 15

17 x 85 + 15 x 17 - 120

Answer 1

a) 15 x 141 + 59 x 15

= 15.(141 + 59) 

= 15.200

= 3000

b) 17 x 85 + 15 x 17 - 120

= 17(85 + 15) - 120 

= 17.100 - 120

= 1700 - 120

= 1580

Answer 2

15*(141+59)

=15*200

=3000

17*(85+150)-120

=17*100-120

=1700-120

=1580

Answer 3

a)15.141+ 59.15

=15.(141+ 59)

=15.200

= 3000

b)17.85+ 15.17- 120

=17.(85+ 15)   - 120

=17.  100        - 120

=    1700         - 120

=            1580

Answer 4

15x141+59x15=(141+59)x(15+15)=200x30=6000

17x85+15x17-120=17x(85+15)-120=17x100-120=1700-120=1580

bạn

Answer 5

15 x 141 + 59 x 15

= 15 x ( 141 + 59 )

= 15 x 200

= 3000

17 x 85 + 15 x 17 - 120

= 17 x 85 + 3 x 5 x 17 - 120

= 17 x 85 +3 x 85 - 120

= 85 x (17 +3) - 120

= 85 x 20 -120

= 1700 -120

=1580

= 

= 

Answer 6

a) 15 x 141 + 59 x 15

= 15.(141 + 59) 

= 15.200

= 3000

b) 17 x 85 + 15 x 17 - 120

= 17(85 + 15) - 120 

= 17.100 - 120

= 1700 - 120

= 1580