Question

Thực hiện phép tính:

a,54.(41+59)-54.85

b,120.14+14.30

Answer 1

a,54.(41+59)-54.85

 = 54. 100 - 4590

= 5400- 4590

= 810

b,120.14+14.30

= 1680 +420

= 2100

Học tốt

Answer 2

\(a,54\cdot\left(41+59\right)-54\cdot85\)

\(=54\cdot100-54\cdot85\)

\(=54\cdot\left(100-85\right)\)

\(=54\cdot15=810\)

\(b,120\cdot14+14\cdot30\)

\(=14\cdot\left(120+30\right)\)

\(=14\cdot150=2100\)

Answer 3

a) 54.(41+59)-54.85= 54.100-54.85

                               = 54.(100-85)

                               = 54.15

                               = 810

b) 120.14+14.30= (120+30).14

                          = 150.14

                          = 2100

Answer 4

a)54(41+59)-54.85=54(41+59-85)=54.15=810
b)120.14+14.30=14(120+30)=14.150=2100

Answer 5

\(54\times\left(41+59\right)-54\times85=54\times100-54\times85=54\times\left(100-85\right)=54\times15=810\) = 810

Answer 6

a,54.(41+59)-54.85

=54.100-54.85

=54.(100-85)

=54.15

=810

b,120.14+14.30

=14.(120+30)

=14.150

=2100

Answer 7

\(120\times14+14\times30=14\times\left(120+30\right)=14\times150=2100\)

Answer 8

54 . ( 41 + 59 ) - 54 . 85

= 54 . 100 - 54 . 85

= 54( 100 - 85 )

= 54 . 15

= 810

120 . 14 + 14 . 30

= 14( 120 + 30 )

= 14 . 150 

= 2100