\(1968:16+5136:16-704:16\)

= \(\left(1968+5136-704\right):16\)

= \(6400:16\)

= \(400\).

1968:16+5136:16-704:16

=(1968+5136-704):16

=..................................bạn tự tính

\(1968\div16+5136\div16-704\div16\)

\(=\left(1968+5136-704\right)\div16\)

\(=6400\div16\)

\(=400\)

\(b,2^3x5^3-3x\left\{400-\left[673-2^3x\left(7^8:7^6+7^0\right)\right]\right\}\)

\(=1000-3x\left\{400-\left[673-8x\left(7^2+1\right)\right]\right\}\)

\(=1000-3x\left\{400-\left[673-8x50\right]\right\}\)

\(=1000-3x\left\{400-\left[673-400\right]\right\}\)

\(=1000-3x\left\{400-273\right\}\)

\(=1000-3x127\)

\(=1000-381\)

\(=619\)

\(a,1968:16+5136:16-704:16\)

\(=\left(1968+5136-704\right):16\)

\(=6400:16\)

\(=400\)

1968:16+5136:16-704:16

=(1968+5136-704):16

=400

a)-2020+(2019-1968)-(2019-2020)=2020+51-(-1)=2071+1=2072

b)-37x16+36x(-37)-2x(-37)=-37x(16+36-2)=-37x50=-1850

c)1000:(-10)2+3.(-5)-(-155).0=-100.2+(-15)-0=-200+-15=-215

123+456+777+444=(123+777)+(456+444)

=1000+1000=2000

= (123 + 777) + (456 + 444)

= 900 + 900

= 1800

= 16. (28 + 70 + 2)

= 16 . (98 + 2 )

= 16 . 100

= 1600

(3^16.15+3^16):3^17

=(15:3)^17

=5^17

chúc bạn học giỏi nhớ nha

16. 4 = 64