Question

Tính giá trị của các biểu thức sau :

a) 4 . 5² - 32 : 2⁴

b) 5891 : [ 928 - ( 247 - 82 ) . 5 ]

c) 3. 25 . 8 + 4 . 37 . 6 + 2 . 38 . 12

d) ( - 75 ) + ( -325 )

Giúp mk với

 

Answer 1

a. 4.5^2 -32:2^4

= 4.25-32:16

=100-2

=98

Answer 2

5891 :\(\left\{928-\left(247-82\right).5\right\}\)

=5891:\(\left\{928-165.5\right\}\)

=5891:\(\left\{928-825\right\}\)

=5891:103

=57.194175

Answer 3

3.25.8+4.37.6+2.38.12

=600+888+912

=2400

Answer 4

d.(-75)+(-325)

=(-400)

Answer 5

\(a.\)

\(4.5^2-32:2^4\)

\(=4.25-32:16\)

\(=100-2\)

\(=98\)

\(b.\)

\(5891:\left[928-\left(247-82\right).5\right]\)

\(=5891:\left[928-165.5\right]\)

\(=5891:\left[928-825\right]\)

\(=5891:103\)

\(=\frac{5891}{103}\)

\(c.\)

\(3.25.8+4.37.6+2.38.12\)

\(=600+888+912\)

\(=2400\)

\(d.\)

\(\left(-75\right)+\left(-325\right)\)

\(=-400\)